Unlock instant, AI-driven research and patent intelligence for your innovation.

Display device with light sensors

A display device and light sensor technology, applied in the direction of identification devices, optics, instruments, etc., can solve problems such as the difficulty of distinguishing images from backgrounds, and the inability to detect touch positions correctly, and achieve the effect of simplifying the structure

Inactive Publication Date: 2010-12-08
SHARP KK
View PDF2 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the image detection method, when the illuminance of external light is low (the surrounding is dark), it becomes difficult to distinguish the image from the background in the image obtained by the optical sensor, and the touch position may not be detected correctly.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Display device with light sensors
  • Display device with light sensors
  • Display device with light sensors

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0071] figure 1 It is a block diagram showing the configuration of the liquid crystal display device according to the first embodiment of the present invention. figure 1 The illustrated liquid crystal display device 10 includes a sensor built-in liquid crystal panel 11 , a display data processing unit 12 , an A / D converter 13 , a sensor data processing unit 14 , and a backlight 15 . A liquid crystal panel with built-in sensors 11 (hereinafter referred to as liquid crystal panel 11 ) includes a panel drive circuit 16 and a pixel array 17 including a plurality of pixel circuits 1 and a plurality of photosensors 2 arranged two-dimensionally. The photosensor 2 is provided with an infrared light transmission filter 3 that transmits infrared light and blocks (absorbs) visible light.

[0072] External display data D1 is input to the liquid crystal display device 10 . The display data processing unit 12 performs color correction processing, frame rate conversion processing, and th...

no. 2 Embodiment approach

[0105] Figure 11 It is a block diagram showing the configuration of a liquid crystal display device according to a second embodiment of the present invention. Figure 11 The illustrated liquid crystal display device 60 is a display device in which the liquid crystal panel 11 with a built-in sensor is replaced with the liquid crystal panel with a built-in sensor 61 in the liquid crystal display device 10 of the first embodiment. Among the constituent elements of the present embodiment, the same elements as those of the first embodiment are denoted by the same reference numerals and description thereof will be omitted.

[0106] The liquid crystal panel 61 with a built-in sensor (hereinafter referred to as the liquid crystal panel 61) includes a panel drive circuit 16 and a pixel array 62. The pixel array 62 includes a plurality of pixel circuits 1 and a plurality of photosensors 2 arranged two-dimensionally. The pixel array 62 also includes a transparent The infrared light-tra...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A liquid crystal panel with built-in sensors (11) comprises a plurality of pixel circuits (1) and a plurality of light sensors (2) which are two-dimensionally arranged in a pixel array (17). An infrared light transmission filter (3) for transmitting infrared light and blocking visible light is provided in the path of light incident on the light sensor (2). Thus, an image obtained by the light sensor (2) can be prevented from being influenced by visible light included in external light and backlight light, and the touch position can be detected with high accuracy on the basis of the image which is not influenced by a large amount of visible light included in the external light and the backlight light. In place of the infrared light transmission filter (3), a light shielding film having the same property may be used.

Description

technical field [0001] The present invention relates to a display device, in particular to a display device provided with a plurality of light sensors in a display panel. Background technique [0002] In recent years, electronic devices that can be operated by touching a screen with a finger, a pen, or the like have become widespread. In addition, as a method of detecting a touch position on a display screen, a method of providing a plurality of photosensors on a display panel and using the photosensors to detect an image that appears when a finger or the like approaches the screen is known. In the image detection method, when the illuminance of external light is low (the surrounding is dark), it becomes difficult to distinguish the image from the background in the image obtained by the photosensor, and the touch position may not be detected correctly. Therefore, there is also known a method of using an optical sensor to detect a reflected image when light from the backligh...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G09F9/30G02F1/1335G02F1/1345G02F1/1368G06F3/041G06F3/042G09F9/00
CPCG02F1/13338G02F2203/11G02F2202/104G02F2001/13312G02F1/133512G06F3/042G06F3/0412G02F1/13312
Inventor 后藤利充藤冈章纯久保田章敬及部圭
Owner SHARP KK