CROSS-REFERENCE TO RELATED APPLICATION

This application claims the benefit of China Patent Application No. 201710762438.7, filed on Aug. 30, 2017, in the State Intellectual Property Office of the People's Republic of China, the disclosure of which is incorporated herein in its entirety by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present disclosure relates to a liquid crystal display technology field, and more particularly to a structure of a liquid crystal display device.

2. Description of the Related Art

The existing liquid crystal display device usually includes a LCD panel and a light source module, and the light source module includes a light guide plate and a backlight source. The light source module is mainly configured to provide surface light to the LCD panel for display. In general, according to location of the backlight source in the light source module, the light source modules can be classified into a direct type light source module and an edge-lit type light source module. The backlight source of the direct type light source module is disposed on a rear surface of the light guide plate, and the direct type light source module is usually applied to larger-size LCD panel. The backlight source of the edge-lit light source module is disposed on the side surface of the light guide plate, and the edge-lit light source module is usually applied to the smaller-size LCD panel.

Each of the direct type and edge-lit type light source modules has advantages and drawbacks, and the costs of the direct type and edge-lit type light source modules are different. The ultra-thin liquid crystal display devices become increasingly welcome, so development trends of the direct type and the edge-lit type liquid crystal display devices both are towards ultra-thin sizes.

Technologies of the LCD panel and the light source module are fully developed, but the components (such as various circuit boards) of the liquid crystal display device are not optimized in configuration locations thereof, so there is still much room for improvement in thickness of the liquid crystal display device.

SUMMARY OF THE INVENTION

In order to solve the aforementioned problems, the present disclosure provides a technical solution of setting configuration locations of various circuit boards, so as to decrease the thickness of the liquid crystal display device, and maintain uniformity of the light source.

According to an aspect of the present disclosure, the present disclosure provides a liquid crystal display device including a light guide plate, at least one backlight source and a circuit board. The light guide plate is configured for backlight, and comprises a front face, a rear surface and the four side surfaces, and the four side surfaces are located between the front face and the rear surface, the four side surfaces comprises a wide side surface, a narrow side surface, a first side surface and a second side surface, the first side surface and the second side surface are located between the wide side surface and the narrow side surface. The front face comprises a plane and an inclined surface, the inclined surface is located at an edge of the light guide plate and adjacent to the narrow side surface. The at least one backlight source is disposed on at least one the side surface. The circuit board is disposed on the inclined surface of the light guide plate.

Preferably, the liquid crystal display device further includes a LCD panel disposed on the rear surface of the light guide plate.

Preferably, the liquid crystal display device further includes a tape and reel chip carrier electrically connected to the LCD panel and the circuit board.

Preferably, the liquid crystal display device further includes an integrated circuit disposed on a tape and reel chip carrier, configured to drive the LCD panel.

Preferably, the at least one backlight source disposed on the wide side surface and the first side surface.

Preferably, the liquid crystal display device further includes a light reflective coating layer disposed on the narrow side surface and the second side surface.

Preferably, the liquid crystal display device further includes a variable-frequency circuit board or other circuit board disposed on the inclined surface of the light guide plate, adjacent to the circuit board.

Preferably, the at least one backlight source is disposed on the wide side surface, and the liquid crystal display device further includes a light reflective coating layer disposed on the narrow side surface, the first side surface and the second side surface.

According to other aspect of the present disclosure, the present disclosure provides a liquid crystal display device includes a light guide plate, a backlight source and a circuit board. The light guide plate used for providing backlight and comprises a front face, a rear surface and the four side surfaces. The four side surfaces are located between the front face and the rear surface, the four side surfaces comprises a wide side surface, a narrow side surface, a first side surface and a second side surface, and the first side surface and the second side surface are located between the wide side surface and the narrow side surface. The front face comprises a plane and an inclined surface, the inclined surface is located at an edge of the light guide plate and adjacent to the narrow side surface. The backlight source is disposed on the plane and the inclined surface. The circuit board is disposed on the backlight source located on the inclined surface.

Preferably, the liquid crystal display device further includes a LCD panel disposed on the rear surface of the light guide plate.

Preferably, the liquid crystal display device further includes a tape and reel chip carrier electrically connected to the LCD panel and the circuit board.

Preferably, the liquid crystal display device further includes an integrated circuit disposed on a tape and reel chip carrier, and configured to drive the LCD panel.

Preferably, the backlight source comprises a plurality of the backlight bars.

Preferably, the liquid crystal display device further includes a light reflective coating layer disposed on the four side surfaces.

Preferably, the liquid crystal display device further includes a variable-frequency circuit board or other the circuit board disposed on the inclined surface of the light guide plate, and adjacent to the circuit board.

Preferably, the backlight source is a dot matrix LED.

According to another aspect of the present disclosure, the present disclosure provides a manufacturing method of a liquid crystal display device. The manufacturing method comprise steps: forming a light guide plate for backlight, wherein the light guide plate comprises a front face, a rear surface and the four side surfaces, and the four side surfaces are located between the front face and the rear surface, the four side surfaces comprises a wide side surface, a narrow side surface, a first side surface and a second side surface, the first side surface and the second side surface are located between the wide side surface and the narrow side surface, and the front face comprises a plane and an inclined surface, and the inclined surface is located at an edge of the light guide plate and adjacent to the narrow side surface; forming at least one backlight source on at least one side surface; providing the circuit board disposed on the inclined surface of the light guide plate.

Preferably, the manufacturing method further comprises a step of disposing the LCD panel on the rear surface of the light guide plate.

Preferably, the manufacturing method further comprises a step of providing a tape and reel chip carrier electrically connect to the LCD panel and the circuit board.

Preferably, the manufacturing method further comprises a step of disposing an integrated circuit on the tape and reel chip carrier and configured to drive the LCD panel.

Preferably, the manufacturing method further comprises a step of disposing at least one backlight source on the wide side surface and the first side surface.

Preferably, the manufacturing method further comprises a step of forming a light reflective coating layer on the narrow side surface and the second side surface.

Preferably, the manufacturing method further comprises a step of disposing a variable-frequency circuit board or other circuit board on the inclined surface of the light guide plate, and adjacent to the circuit board.

Preferably, the manufacturing method further comprises a step of forming the at least one the backlight source on the wide side surface, and forming a light reflective coating layer on the narrow side surface, the first side surface and the second side surface.

According to another aspect of the present disclosure, the present disclosure provides a manufacturing method of the liquid crystal display device. The manufacturing method comprises steps: forming a light guide plate which is for backlight and comprises a front face, a rear surface and the four side surfaces, and wherein the four side surfaces are located between the front face and the rear surface, the four side surfaces comprises a wide side surface, a narrow side surface, a first side surface and a second side surface, and the first side surface and the second side surface are located between the wide side surface and the narrow side surface, and the front face comprises a plane and an inclined surface, and the inclined surface is located at an edge of the light guide plate and adjacent to the narrow side surface; providing a backlight source disposed on the plane and the inclined surface; providing a circuit board disposed on the backlight source located on the inclined surface.

Preferably, the manufacturing method comprises step of: providing a LCD panel disposed on the rear surface of the light guide plate.

Preferably, the manufacturing method comprises step of: providing a tape and reel chip carrier electrically connect to the LCD panel and the circuit board.

Preferably, the manufacturing method comprises step of: providing an integrated circuit, disposed on a tape and reel chip carrier, configured to drive the LCD panel.

Preferably, the backlight source comprises a plurality of the backlight bars.

Preferably, the manufacturing method comprises step of: forming a light reflective coating layer on the four side surfaces.

Preferably, the manufacturing method comprises step of: disposing a variable-frequency circuit board or other circuit board on the inclined surface of the light guide plate, and adjacent to the circuit board.

Preferably, the backlight source is a dot matrix LED.

According to another aspect of the present disclosure, the present disclosure provides a liquid crystal display device including a light guide plate, at least one backlight source and a circuit board. The light guide plate used for providing backlight, and comprises a front face, a rear surface and the four side surfaces, and the four side surfaces are located between the front face and the rear surface, the four side surfaces comprises a wide side surface, a narrow side surface, a first side surface and a second side surface, the first side surface and the second side surface are located between the wide side surface and the narrow side surface. The front face comprises a plane, a first inclined surface and a second inclined surface, the first inclined surface is located at a corner of the light guide plate and adjacent to the narrow side surface and the first side surface, and the second inclined surface is located at other corner of the light guide plate and adjacent to the narrow side surface and the second side surface. The at least one backlight source is disposed on at least one of the four side surfaces. The circuit board is disposed on the first inclined surface of the light guide plate.

Preferably, the liquid crystal display device further includes a LCD panel disposed on the rear surface of the light guide plate.

Preferably, the liquid crystal display device further includes a tape and reel chip carrier electrically connected to the LCD panel and the circuit board.

Preferably, the liquid crystal display device further includes an integrated circuit disposed on a tape and reel chip carrier, configured to drive the LCD panel.

Preferably, the at least one backlight source disposed on the wide side surface and the first side surface.

Preferably, the liquid crystal display device further includes a light reflective coating layer disposed on the narrow side surface and the second side surface.

Preferably, the liquid crystal display device further includes a variable-frequency circuit board or other circuit board disposed on the second inclined surface of the light guide plate.

Preferably, the at least one backlight source is disposed on the wide side surface, and the liquid crystal display device further includes a light reflective coating layer disposed on the narrow side surface, the first side surface and the second side surface.

According to other aspect of the present disclosure, the present disclosure provides a liquid crystal display device includes a light guide plate, a backlight source and a circuit board. The light guide plate used for providing backlight and comprises a front face, a rear surface and the four side surfaces. The four side surfaces are located between the front face and the rear surface, the four side surfaces comprises a wide side surface, a narrow side surface, a first side surface and a second side surface, and the first side surface and the second side surface are located between the wide side surface and the narrow side surface. The front face comprises a plane, a first inclined surface and a second inclined surface, the first inclined surface is located at a corner of the light guide plate and adjacent to the narrow side surface and the first side surface, and the second inclined surface is located at other corner of the light guide plate and adjacent to the narrow side surface and the second side surface. The backlight source is disposed on the plane, the first inclined surface and the second inclined surface. The circuit board is disposed on the backlight source located on the first inclined surface.

Preferably, the liquid crystal display device further includes a LCD panel disposed on the rear surface of the light guide plate.

Preferably, the liquid crystal display device further includes a tape and reel chip carrier electrically connected to the LCD panel and the circuit board.

Preferably, the liquid crystal display device further includes an integrated circuit disposed on a tape and reel chip carrier, and configured to drive the LCD panel.

Preferably, the at least one backlight source comprises a plurality of the backlight bars.

Preferably, the liquid crystal display device further includes a light reflective coating layer disposed on the four side surfaces.

Preferably, the liquid crystal display device further includes a variable-frequency circuit board or other the circuit board disposed on the second inclined surface of the light guide plate.

Preferably, the backlight source is a dot matrix LED.

According to another aspect of the present disclosure, the present disclosure provides a manufacturing method of a liquid crystal display device. The manufacturing method comprise steps: forming a light guide plate for backlight, wherein the light guide plate comprises a front face, a rear surface and the four side surfaces, and the four side surfaces are located between the front face and the rear surface, the four side surfaces comprises a wide side surface, a narrow side surface, a first side surface and a second side surface, the first side surface and the second side surface are located between the wide side surface and the narrow side surface, and the front face comprises a plane, a first inclined surface and a second inclined surface, and the first inclined surface is located at a corner of the light guide plate and adjacent to the narrow side surface and the first side surface, and the second inclined surface is located at other corner of the light guide plate and adjacent to the narrow side surface and the second side surface; forming at least one backlight source on at least one side surface; disposing the circuit board on the first inclined surface of the light guide plate.

Preferably, the manufacturing method further comprises a step of disposing the LCD panel on the rear surface of the light guide plate.

Preferably, the manufacturing method further comprises a step of providing a tape and reel chip carrier electrically connect to the LCD panel and the circuit board.

Preferably, the manufacturing method further comprises a step of disposing an integrated circuit on the tape and reel chip carrier and configured to drive the LCD panel.

Preferably, the manufacturing method further comprises a step of disposing at least one backlight source on the wide side surface and the first side surface.

Preferably, the manufacturing method further comprises a step of forming a light reflective coating layer on the narrow side surface and the second side surface.

Preferably, the manufacturing method further comprises a step of disposing a variable-frequency circuit board or other circuit board on the second inclined surface of the light guide plate.

Preferably, the manufacturing method further comprises a step of forming the at least one the backlight source on the wide side surface, and forming a light reflective coating layer on the narrow side surface, the first side surface and the second side surface.

According to another aspect of the present disclosure, the present disclosure provides a manufacturing method of the liquid crystal display device. The manufacturing method comprises steps: forming a light guide plate for backlight and comprising a front face, a rear surface and the four side surfaces, and wherein the four side surfaces are located between the front face and the rear surface, the four side surfaces comprises a wide side surface, a narrow side surface, a first side surface and a second side surface, and the first side surface and the second side surface are located between the wide side surface and the narrow side surface, and the front face comprises a plane, a first inclined surface and a second inclined surface, and the first inclined surface is located at a corner of the light guide plate and adjacent to the narrow side surface and the first side surface, and the second inclined surface is located at other corner of the light guide plate and adjacent to the narrow side surface and the second side surface; providing a backlight source disposed on the plane, the first inclined surface and the second inclined surface; providing a circuit board disposed on the backlight source located on the first inclined surface.

Preferably, the manufacturing method comprises step of: providing a LCD panel disposed on the rear surface of the light guide plate.

Preferably, the manufacturing method comprises step of: providing a tape and reel chip carrier electrically connect to the LCD panel and the circuit board.

Preferably, the manufacturing method comprises step of: providing an integrated circuit disposed on a tape and reel chip carrier and configured to drive the LCD panel.

Preferably, the backlight source comprises a plurality of the backlight bars.

Preferably, the manufacturing method comprises step of: forming a light reflective coating layer on the four side surfaces.

Preferably, the manufacturing method comprises step of: disposing a variable-frequency circuit board or other circuit board on the second inclined surface of the light guide plate.

Preferably, the backlight source is a dot matrix LED.

According to aforementioned content, the present disclosure provides a technical solution of setting configuration locations of various circuit boards to decrease the thickness of the liquid crystal display device; furthermore, the light guide plate has the inclined surface only located near the edge or the corner thereof, as a result, the light guide plate is able to maintain uniformity of light source.

