System and method for measuring reaction time of liquid crystal display
A technology of liquid crystal display and response time, which is applied in the fields of instruments, nonlinear optics, optics, etc., and can solve the problems of high cost and precision that cannot be adjusted dynamically
Pending Publication Date: 2021-06-22
REALTEK SEMICON CORP
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Problems solved by technology
[0003] At present, there are instruments on the market that can measure the response time of displays, but their cost is often quite expensive, which is beyond the affordability of ordinary users
Furthermore, the accuracy of the general equipment for measuring the response time of liquid crystal displays cannot be adjusted dynamically, so a device and method with the function of dynamically adjusting the accuracy and capable of measuring the response time of liquid crystal displays is needed
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[0036] The present invention proposes a system framework for measuring the response time of the liquid crystal display, allowing users to assemble a suitable measurement system with simple and easily obtained components.
[0037] figure 1 It is a functional block diagram of the measuring system 100, the liquid crystal display 10 to be tested and the connected computer 20 according to an embodiment of the present invention. The measurement system 100 and the liquid crystal display 10 are coupled to the computer 20 . Wherein, the liquid crystal display 10 includes a control circuit 14 and a display panel 12 . The control circuit 14 receives the display signal Si from the computer 20, and controls the multiple pixels of the display panel 12 to display corresponding images according to the received display signal Si, and the liquid crystal in the display panel 12 displays different images on the display panel 12. It is controlled to turn the state (that is: polarity conversion) ...
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The invention discloses a system and a method for measuring reaction time of a liquid crystal display. The measuring system comprises a photosensitive element, an analog-to-digital converter, a reference voltage source and a transmission interface. The photosensitive element senses the change of the brightness of a display panel of the liquid crystal display so as to generate a voltage signal. The analog-to-digital converter converts the voltage signal into a digital signal. The reference voltage source provides a reference voltage to the analog-to-digital converter, so that the analog-to-digital converter dynamically adjusts a convertible voltage range of the analog-to-digital converter for an input voltage thereof according to the reference voltage. The transmission interface transmits the digital signal to a computer, so that the computer calculates the response time of the liquid crystal display according to the received digital signal.
Description
technical field [0001] The invention relates to a measurement system and method for measuring the response time of a liquid crystal display, in particular to a measurement system for measuring the response time of a liquid crystal display and dynamically adjusting the voltage measurement range of its analog-to-digital converter and methods. Background technique [0002] The response time of the liquid crystal display refers to the time it takes for the liquid crystal in the liquid crystal display to transition, and the speed of the response time will directly affect the viewing experience of the user. In recent years, liquid crystal displays have especially marked their response time. For manufacturers or users, a response time measurement system suitable for product development or product verification is indispensable. [0003] Currently, there are instruments capable of measuring the response time of displays on the market, but their cost is often quite expensive, beyond ...
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IPC IPC(8): G02F1/13
CPCG02F1/1309
Inventor 陈雍之林伟智魏瑞德陈柏安
Owner REALTEK SEMICON CORP