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Liquid crystal display and head-up display

A liquid crystal display device and liquid crystal technology, which can be applied to static indicators, instruments, nonlinear optics, etc., and can solve problems such as complex composition of liquid crystal display devices

Inactive Publication Date: 2009-07-29
EPSON IMAGING DEVICES CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the liquid crystal display device described in the above-mentioned Patent Document 1, since the correction of RGB digital signals is performed by various processings of the processing of the inverse gamma correction circuit and the processing of the gamma correction circuit, there is a liquid crystal display device The composition of the problem point becomes complicated

Method used

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  • Liquid crystal display and head-up display
  • Liquid crystal display and head-up display
  • Liquid crystal display and head-up display

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no. 1 Embodiment approach

[0042] FIG. 1 is a block diagram showing the overall configuration of a field sequential liquid crystal display device according to a first embodiment of the present invention. figure 2 , is a diagram showing the configuration of a pixel in the first embodiment of the present invention. First, referring to Figure 1 and figure 2 , the structure of the field sequential liquid crystal display device 100 in the first embodiment will be described. In addition, in the first embodiment, a case where the present invention is applied to the field sequential liquid crystal display device 100 as an example of a liquid crystal display device will be described.

[0043] A field sequential liquid crystal display device 100 according to the first embodiment is constituted by a drive unit 1 and a display unit 2 as shown in FIG. 1 . Hereinafter, it demonstrates in detail.

[0044] As shown in FIG. 1, the driving unit 1 is composed of an A / D converter 11, a PLL (phase synchronization) circui...

no. 2 Embodiment approach

[0073] Figure 9 , is a circuit diagram for changing the white voltage of the field sequential liquid crystal display device according to the second embodiment of the present invention. refer to Figure 9 , in this second embodiment, unlike the above-mentioned first embodiment, a field sequential liquid crystal display device 100a in which the black voltage is changed and the white voltage is also changed will be described.

[0074] The field sequential liquid crystal display device 100a in the second embodiment is as shown in Figure 9 Ground, a non-inverting amplifier 42 is disposed between the analog driver 15 and a power supply 41 that generates a reference voltage for the analog driver 15 . In addition, the analog driver 15 is an example of the "first circuit" of the present invention. Furthermore, the power supply 41 and one (+) of the input terminals of the non-inverting amplifier 42 are connected through a resistor 43 . Furthermore, the output side of the non-inver...

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Abstract

The present invention provides a liquid crystal display device and a head-up display. The liquid display device is capable of avoiding the complexity of the configuration of the liquid display, and of displaying the black. The liquid crystal display device (interlace sequence liquid crystal device 100) includes: pixels (23) which each include a liquid crystal (234), a pixel electrode (232), and a common electrode (233), the pixel electrode and the common electrode applying voltage to the liquid crystal; a display unit (2) in which the plurality of pixels (23) are arranged in a matrix shape; and LEDs (27a-27c). The voltage applied to the liquid crystal is adjusted by varying an intensity of voltage applied to the common electrode (233) of the pixels (23) in accordance with light radiated by the plurality of LEDs (27a-27c).

Description

technical field [0001] The present invention relates to a liquid crystal display device and a head-up display, in particular to a field-sequential drive liquid crystal display device and a head-up display in which a plurality of light sources sequentially emit light. Background technique [0002] Conventionally, there is known a field sequential drive liquid crystal display device in which a plurality of light sources sequentially emit light (for example, refer to Patent Document 1). [0003] From the above-mentioned Patent Document 1, it is disclosed that there is an A / D converter for converting each analog signal of red (R), green (G) and blue (B) into a digital signal, and an inverse gamma correction circuit and A gamma correction circuit, a level correction circuit for converting the intensity level (level) of a digital signal, and a liquid crystal display device. However, when a bend alignment cell with a fast response speed is used, the bend alignment cell has a chara...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/133G09G3/36G09G3/34
CPCG09G2310/0235G09G3/3655G09G3/3406G09G2320/0646G02F1/133G09G3/36
Inventor 佐藤政俊
Owner EPSON IMAGING DEVICES CORP