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Flat panel display embedding optical imaging sensor

A technology of flat-panel display and optical sensor, which is applied in printing image acquisition, instruments, light sources, etc., can solve the problems of detection ability degradation and achieve the effect of high degree of design freedom

Active Publication Date: 2018-06-05
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, even if the thickness of the protective film is thin, the detection capability against the difference in capacitance storage for sensing fingerprints may be deteriorated due to the protective film

Method used

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  • Flat panel display embedding optical imaging sensor
  • Flat panel display embedding optical imaging sensor
  • Flat panel display embedding optical imaging sensor

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Experimental program
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no. 1 approach

[0037] Below, refer to figure 1 and figure 2 , we will explain about the first embodiment of the present disclosure. figure 1 is a cross-sectional view illustrating the structure of the optical image sensor-embedded organic light emitting diode display according to the first embodiment of the present disclosure.

[0038] refer to figure 1 , The optical image sensor-embedded flat panel display according to the first embodiment includes a display panel DP and an optical sensor (or photosensor) SE disposed on the rear side (or rear surface) of the display panel DP. Preferably, the display panel DP includes a self-illuminating display panel such as an organic light emitting diode display panel or an inorganic light emitting diode display panel.

[0039] The display panel DP has a display area for representing video information and a sensing area (or image sensing area) SA. The sensing area SA is defined in the display area for detecting an image of an object. For example, fo...

no. 2 approach

[0051] Below, refer to image 3 , we will explain about the second embodiment of the present disclosure. image 3 is a cross-sectional view illustrating a structure of an organic light emitting diode display embedded with an optical image sensor according to a second embodiment of the present disclosure.

[0052] refer to image 3 , the optical image sensor-embedded flat panel display according to the second embodiment includes a display panel DP and a photo sensor SE disposed at a rear side of the display panel DP. Preferably, the display panel DP includes a self-illuminating display panel such as an organic light emitting diode display panel or an inorganic light emitting diode display panel.

[0053] The display panel DP has a display area for representing video information and a sensing area SA. The sensing area SA is defined in the display area for detecting an image of an object. For example, for fingerprint sensing, the sensing area SA may be an area on which a user...

no. 3 approach

[0064] Below, refer to Figure 4 , we will explain about the third embodiment of the present disclosure. Figure 4 is a cross-sectional view illustrating a structure of an organic light emitting diode display embedded with an optical image sensor according to a third embodiment of the present disclosure.

[0065] In the first and second embodiments, light irradiated from an electroluminescence display such as an organic light emitting diode display or an inorganic light emitting diode display for expressing video images is used as light for sensing an image of a subject. In these cases, it may be difficult to obtain an accurate image because the light is not strong enough to detect the correct image. To compensate for image detection capabilities, a light source for image sensing may also be included.

[0066] refer to Figure 4 , A flat panel display embedded with an optical image sensor according to a third embodiment includes a display panel DP, an optical sensor SE disp...

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Abstract

The invention provides a flat panel display embedding optical imaging sensor. The present disclosure relates to a flat panel display embedding an optical imaging sensor such as a fingerprint image sensor. The present disclosure provides a flat panel display embedding an optical image sensor comprising: a display panel including a display area and a sensing area defined in the display area; a barrier plate having a light transparent area corresponding to the sensing area and disposed at a rear surface of the display panel; and a light sensor disposed under the barrier plate corresponding to thelight transparent area.

Description

technical field [0001] The present disclosure relates to a flat panel display embedded with an optical image sensor such as a fingerprint image sensor. In particular, the present disclosure relates to organic light emitting diode displays having an optical image sensor attached to the rear surface of the display. Background technique [0002] Various computer-based systems have been developed, including notebook computers, tablet personal computers (or PCs), smart phones, personal digital assistants, automated teller machines, and / or search information systems. Since these devices use and store various personal information as well as business information and trade secrets, enhanced security is required to prevent leakage of such important data. [0003] To this end, a method for strengthening security using an image sensor that recognizes biometric information of an authorized user has been proposed. For example, fingerprint sensors are commonly used to enhance security wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F9/33G06K9/00
CPCG09F9/33G06V40/1318H10K59/871H10K59/65H01L27/14678H01L27/14627H01L27/14636H01L27/14618H05B33/12H10K59/60H01L23/4985H01L25/167H01L27/15
Inventor 柳昇万姜勋玄周奉张晋赫尹娥罗
Owner LG DISPLAY CO LTD
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