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Liquid crystal display device and method for processing images in liquid crystal display device

A liquid crystal display device and a technology for displaying images, which are applied in the field of image processing and can solve the problems of darkening of alarm display, difficult for drivers to know, etc.

Inactive Publication Date: 2010-12-08
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the display screen as a whole becomes dark at night, etc., the warning display also becomes dark, and there is a problem that it is difficult for the driver to know.

Method used

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  • Liquid crystal display device and method for processing images in liquid crystal display device
  • Liquid crystal display device and method for processing images in liquid crystal display device
  • Liquid crystal display device and method for processing images in liquid crystal display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0104] Below, based on Figure 1 to Figure 5 , to describe an embodiment of the present invention. In addition, this invention is not limited to this embodiment. In this embodiment, an example of a vehicle-mounted liquid crystal display device will be described. A vehicle-mounted liquid crystal display device is a device mounted on a vehicle to display information from various sensors or vehicle-mounted equipment, and can also be used as a car navigation system or a television. figure 1 The structure of the liquid crystal display device 10 of this embodiment is shown. The liquid crystal display device 10 has a function of adjusting the brightness of an image displayed on the liquid crystal display according to changes in ambient brightness (for example, changes in ambient brightness between day and night).

[0105] Such as figure 1 As shown, the liquid crystal display device 10 includes a liquid crystal display 11 (display panel), a backlight 12, a gate driver 13, a source...

example 1

[0140] Here, as a comparative example of the present invention, refer to Figure 12 to Figure 14 , the structure of the conventional vehicle-mounted liquid crystal display device 110 (conventional example 1) and the method of adjusting the brightness of image display will be described. In addition, in the following conventional examples, an example of displaying 6-bit image data using a 6-bit driver will be described.

[0141] Figure 12 The structure of the liquid crystal display device 110 is shown. Such as Figure 12 As shown, the liquid crystal display device 110 includes a liquid crystal display 111, a backlight source 112, a gate driver 113, a source driver 114, a backlight source driving circuit 115, a liquid crystal controller 124, an in-panel control system 117, and an operation switch 118 as main components. part.

[0142] The control system 117 in the panel is provided with an AD converter 131 , a CPU 132 , a ROM 133 , a RAM 134 , a data input / output unit (I / O) ...

Embodiment approach 2

[0188] Next, Embodiment 2 of the present invention will be described. In the liquid crystal display device according to the present embodiment, the maximum gradation value and the gradation value of (maximum gradation value-1) are used as dedicated gradation values ​​used only for the image data for alarm display, including ( The image data of the gradation value of the maximum gradation value-1) is converted into a gradation value for displaying orange.

[0189] The structure of the liquid crystal display device of this embodiment and figure 1 The liquid crystal display device 10 shown is substantially the same, therefore, reference figure 1 Description is given, and repeated description is omitted. However, in the liquid crystal display device of the present embodiment, since image data is recognized together with the gradation conversion processing in the gradation calculator 22, the image data recognition unit 26 can be omitted.

[0190] Figure 7 An example of the flo...

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PUM

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Abstract

A liquid crystal display device (10) uses an image signal, which includes image data for warning display (first image data) and image data for general display (second image data), to display an image on a display panel. The image data for warning display includes an exclusive gray-scale value that is used only for that image data for warning display. The liquid crystal display device (10) comprises an image data identifying part (26) that determines whether the exclusive gray-scale value is included in an image data, thereby identifying the type of the image data; and a gray-scale calculator (22) (gray-scale converting part) that performs a conversion of the gray-scale value of the image data so as to reduce the brightness of the displayed image when an ambient brightness decreases.

Description

technical field [0001] The present invention relates to a liquid crystal display device mounted mainly on a vehicle to display various information, and an image processing method in such a liquid crystal display device. Background technique [0002] In recent years, in addition to conventional mechanical meters, digital image display devices such as liquid crystal display devices have been used as display devices for vehicle instrument panels. Such an image display device has an advantage that the design or layout of the display can be freely set. Therefore, vehicles using digital image display devices instead of conventional mechanical meters as vehicle-mounted display devices are increasing year by year. [0003] However, if there is a large difference between the brightness outside the car at night and the brightness of the display devices inside the car such as meters, then if you look at the dark outside of the car after seeing the bright display of the meters, the Ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G02F1/133G09G3/20G09G3/34
CPCG09G3/20G09G2320/08G02F2203/30G09G3/36G09G3/34G02F1/133G09G2340/0428G09G2320/0626G09G2380/10G09G2360/144G09G2320/0271
Inventor 藤冈和巧古川智朗
Owner SHARP KK