Temperature detecting device, temperaure detecting method and liquid crystal driving device

A temperature detection device and technology of current temperature, applied in nonlinear optics, static indicators, instruments, etc., can solve problems such as affecting the display quality of liquid crystal displays and stroboscopic flickering of liquid crystal displays.

Inactive Publication Date: 2011-10-12
BYD SEMICON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of realizing the present invention, the inventor found that when the temperature frequently jumps within a small range, the frame frequency will also frequently jump, and the frequent jump of the frame frequency will cause the LCD screen to flicker. Affects the display quality of the LCD screen

Method used

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  • Temperature detecting device, temperaure detecting method and liquid crystal driving device
  • Temperature detecting device, temperaure detecting method and liquid crystal driving device
  • Temperature detecting device, temperaure detecting method and liquid crystal driving device

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Embodiment Construction

[0022] figure 1 It is a schematic structural diagram of Embodiment 1 of the temperature detection device of the present invention. The temperature detection device in this embodiment includes several states and several critical temperature values, each state corresponds to a frame rate, and the preset temperature range corresponding to each state is defined by the critical temperature value. like figure 1 As shown, the temperature detection device in this embodiment includes:

[0023] The state machine 100, when the temperature rises, if the difference between the current temperature value and a certain critical temperature value is within a preset range, it is determined as the previous state of the current state, and if the difference between the current temperature value and the critical temperature value is larger than the critical temperature value Outside the preset range, the current state is determined to be the state corresponding to the current temperature value; w...

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Abstract

The invention relates to a temperature detecting device, a temperaure detecting method and a liquid crystal driving device. The temperature detecting device comprises a state machine, a frame frequency selection unit and a frame frequency output unit. When a current temperature value jumps around a certain critical temperature value, the state machine judges whether the difference value of the current temperature value and the critical temperature value is within the preset range; if the difference value of the current temperature value and the critical temperature value is within the preset range, the state machine determines that the current state is the previous state; if the difference value of the current temperature value and the critical temperature value is out of the preset range,the state machine determines that the current state is the state corresponding to the current temperature value. The frame frequency selection unit connected with the state machine is used for selecting the frame frequency corresponding to the current state according to the current state determined by the state machine. The frame frequency output unit connected with the frame frequency selectionunit is used for outputting the frame frequency. When the temperature jumps frequently in a smaller range, the temperature detecting device can avoid the frequent jump of the frame frequency and the flicker of a liquid crystal display screen caused by the frequent jump of the frame frequency, and thus the display quality of liquid crystal display screen is enhanced.

Description

technical field [0001] The invention relates to the field of liquid crystal driving, in particular to a temperature detection device, a method and a liquid crystal driving device provided with the temperature detection device. Background technique [0002] In the liquid crystal display technology, the display quality of the liquid crystal display (such as display gray scale, brightness characteristics, etc.) is generally affected by temperature. In order to reduce the impact of temperature on the display quality of the liquid crystal display, in the prior art, the temperature detection The device is used to compensate the temperature-induced changes in the display quality of the liquid crystal display. The working process of the temperature detection device is as follows: firstly, the temperature is detected, and when the temperature changes, a better frame frequency is selected to compensate for the temperature-induced change in the display quality of the liquid crystal dis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36G02F1/13
Inventor 张丽李奇峰杨云冯卫
Owner BYD SEMICON CO LTD
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