The LCD (Liquid Crystal Display) possesses many advantages of being ultra thin, power saved and radiation free. It has been widely utilized in, such as LCD TVs, mobile phones, Personal Digital Assistant (PDA), digital cameras, laptop screens or notebook screens, and dominates the flat panel display field.
Most of the liquid crystal displays on the present market are backlight type liquid crystal displays, which comprise a liquid crystal display panel and a backlight module. The working principle of the liquid crystal display panel is that the Liquid Crystal is injected between the Thin Film Transistor Array Substrate (TFT array substrate) and the Color Filter (CF). The light of backlight module is refracted to generate images by applying driving voltages to the two substrates for controlling the rotations of the liquid crystal molecules.
With the constant development of the industry manufacture technology of the liquid crystal display, the cost decrease has already become one of the most development directions in the present industry. Except optimizing the manufacture process of the liquid crystal display, and developing new material to reduce the production cost, the technology of integrating the related function modules, circuits inside the liquid crystal display panel, such as directly manufacturing the gate scan drive circuit on the thin film transistor array substrate with the array manufacture process (Gate Driver on Array, GOA) to replace the external gate scan drive IC is also the popular content of the developments which many liquid crystal display panel makers compete to involve for reducing the production cost in advance.
As conducting the high integration liquid crystal display panel manufacture process, it requires the manufacture environment which is severer. If the particles in the manufacture environment, the metal particles generated by the production apparatus fall on the glass substrate in the manufacture process, it does not only result in the bad quality of the liquid crystal display panel but also the short circuit phenomenon in the circuit. Such short circuit phenomenon causes the image display abnormal, and the continuous usage will make the temperature of the circuit raise and even the burning of the liquid crystal display panel. If the short circuit in the circuit cannot be detected in the production, the product must have highly possible quality risk and the yield descends, which results in the customer complaints and the Call Back of the products. It leads to the massive production cost increase.
The temperature detection to the inside of the liquid crystal display panel according to prior art is accomplished with the temperature detection component outside the liquid crystal display panel. The result of the external temperature detection component must be restricted by the position, and cannot perform detection to the arbitrary positions inside the entire liquid crystal display panel, and the detection precision is not enough.