CN110045557B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
- Publication number
- CN110045557B CN110045557B CN201910220700.4A CN201910220700A CN110045557B CN 110045557 B CN110045557 B CN 110045557B CN 201910220700 A CN201910220700 A CN 201910220700A CN 110045557 B CN110045557 B CN 110045557B
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- liquid crystal
- light
- display panel
- display part
- transparent display
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/139—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
Abstract
The present disclosure provides a display panel and a display device, the display panel including: a liquid crystal cell including a display part and a transparent display part filled with a scattering type liquid crystal; the upper polaroid is arranged on one side of the liquid crystal box, and is provided with an upper light transmission hole corresponding to the transparent display part; the lower polaroid is arranged on one side, far away from the upper polaroid, of the liquid crystal box, a lower light hole is formed in the lower polaroid and corresponds to the transparent display part, the light passing rate is increased, optical identification is achieved by effectively utilizing light of the backlight source, an auxiliary light source is prevented from being used for obtaining an optical reflection signal of a fingerprint, and the success rate of fingerprint identification under the display panel and the display device screen is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a display device.
Background
Fingerprint identification is widely used in portable electronic products, not only used for screen unlocking, but also used for mobile phone payment and the like, and the use safety is improved. The traditional fingerprint identification area is outside the screen, along with the development trend of high screen occupation ratio, for 100% of full-screen, no area on the front surface of the mobile phone can be used for placing a fingerprint sensor, and therefore the fingerprint identification under the screen is the development trend of the fingerprint identification of the mobile phone.
For an Organic Light-Emitting Diode (OLED) Display device, the self-luminous property and the transmittance of a Light-Emitting layer are high, so that the fingerprint identification condition is satisfied, and the fingerprint identification under the screen is easy to be realized. Meanwhile, although there is an ultrasonic identification method, the identification effect is still poor because the thickness of the LCD cover plate is about 0.6-0.9mm, which exceeds the maximum thickness of ultrasonic penetration by 0.4 mm.
In summary, the conventional lcd panel and the display device have a problem of poor fingerprint recognition effect under the screen. Therefore, it is desirable to provide a display panel and a display device to improve the defect.
Disclosure of Invention
The disclosure provides a display panel and a display device, which are used for solving the problem that the fingerprint recognition effect of the existing liquid crystal display device is poor under a screen.
The disclosed embodiment provides a display panel, including:
a liquid crystal cell including a display part and a transparent display part filled with a scattering type liquid crystal;
the upper polaroid is arranged on one side of the liquid crystal box, and is provided with an upper light transmission hole corresponding to the transparent display part; and
the lower polarizer is arranged on one side, far away from the upper polarizer, of the liquid crystal box, and a lower light hole is formed in the lower polarizer and corresponds to the transparent display part.
According to an embodiment of the present disclosure, the display panel further includes a light guide plate disposed on a side of the lower polarizer away from the upper polarizer.
According to an embodiment of the present disclosure, the display panel includes a first light source configured to provide a light source to the display portion through the light guide plate.
According to an embodiment of the present disclosure, the display panel further comprises a second light source configured to provide a light source for the transparent display portion.
According to an embodiment of the present disclosure, the first light source is disposed on the light guide plate near the lower light hole, and the second light source is disposed on the display panel near the transparent display portion.
According to an embodiment of the present disclosure, the display panel further includes an array substrate and a color filter substrate, the array substrate is disposed between the lower polarizer and the liquid crystal cell, and the color filter substrate is disposed between the upper polarizer and the liquid crystal cell.
According to an embodiment of the present disclosure, a driving circuit is disposed on the array substrate, and the driving circuit is configured to control the deflection of the scattering-type liquid crystal of the transparent display portion.
According to an embodiment of the present disclosure, an optical sensor is disposed on a side of the array substrate close to the transparent display portion, and the optical sensor is configured to receive an optical signal.
According to an embodiment of the present disclosure, a glass cover plate is disposed on a side of the upper polarizer away from the liquid crystal cell.
The embodiment of the disclosure also provides a display device, which includes the display panel.
The beneficial effects of the disclosed embodiment are as follows: according to the liquid crystal display panel and the display device, the liquid crystal box is divided into the display part and the transparent display part, the scattering liquid crystal is filled in the transparent display part, the rotation of scattering liquid crystal molecules is controlled through the driving circuit in the array substrate, the upper polaroid and the lower polaroid are respectively provided with the upper light hole and the lower light hole corresponding to the transparent display part, light emitted from the backlight source conveniently passes through the transparent display part, the light passing rate is increased, the light of the backlight source is effectively utilized to realize optical identification, the optical reflection signal of a fingerprint is avoided being acquired by using an auxiliary light source, and the success rate of fingerprint identification under the display panel and the display device screen is improved.
Drawings
In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some of the disclosed embodiments, and that other drawings can be obtained by those skilled in the art without inventive effort.
FIG. 1 is a top view of a display panel according to an embodiment of the disclosure;
fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the disclosure;
fig. 3 is a schematic cross-sectional view of a display panel along the a-a direction according to an embodiment of the disclosure.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings, which illustrate specific embodiments in which the disclosure may be practiced. Directional phrases used in this disclosure, such as [ upper ], [ lower ], [ front ], [ back ], [ left ], [ right ], [ inner ], [ outer ], [ side ], etc., refer only to the directions of the attached drawings. Accordingly, the directional terms used are used for the purpose of illustration and understanding of the present disclosure, and are not used to limit the present disclosure. In the drawings, elements having similar structures are denoted by the same reference numerals.
The disclosure is further described with reference to the following drawings and specific embodiments:
the present disclosure provides a display panel, which is described in detail with reference to fig. 1 to 2.
As shown in fig. 2, fig. 2 is a schematic structural diagram of a display panel 100 according to an embodiment of the disclosure, where the display panel 100 includes a liquid crystal cell 110, an upper polarizer 120, and a lower polarizer 130.
As shown in fig. 1, fig. 1 is a front plan view of a display panel provided by an embodiment of the present disclosure, and the liquid crystal cell 110 includes a display portion 111 and a transparent display portion 112.
In this embodiment, the display portion 111 is filled with a normal liquid crystal, and the transparent display portion 112 is filled with a scattering type liquid crystal.
As shown in fig. 2, the upper polarizer 120 is disposed at one side of the liquid crystal cell 110, and an upper light hole 121 is disposed on the upper polarizer 120, where the upper light hole 121 corresponds to the transparent display portion 112.
The lower polarizer 130 is disposed on a side of the liquid crystal cell 110 away from the upper polarizer 120, and a lower light hole 131 is disposed on the lower polarizer 130, where the lower light hole 131 corresponds to the transparent display portion 112.
In this embodiment, the display panel 100 further includes a light guide plate 140, and the light guide plate 140 is disposed on a side of the lower polarizer 130 away from the upper polarizer 120.
In this embodiment, the display panel 100 further includes a first light source 150, and the first light source 150 is configured to provide light to the display portion 110 through the light guide plate 140. In addition, the first light source 150 may provide a light source for fingerprint recognition through the lower light-transmitting hole 131, the transparent display part 112 and the upper light-transmitting hole 121.
In this embodiment, the display panel 100 further includes a second light source 160, and the second light source 160 is configured to provide a light source for the transparent display portion 112, and the light source is used for displaying pictures normally.
Further, the first light source 150 is disposed on the light guide plate 140 near the lower light hole 131, and the second light source 160 is disposed on the display panel 100 near the transparent display portion 112.
As shown in fig. 3, fig. 3 is a schematic cross-sectional structure view of the display panel along the a-a direction according to the embodiment of the disclosure. The display panel 100 further includes an array substrate 170 and a color filter substrate 180, the array substrate 170 is disposed between the lower polarizer 130 and the liquid crystal cell 110, and the color filter substrate 180 is disposed between the upper polarizer 120 and the liquid crystal cell 110.
In the present embodiment, a driving circuit configured to control the deflection of the scattering type liquid crystal of the transparent display part 112 is provided on the array substrate 170.
In the embodiment, an optical sensor 190 is disposed on a side of the array substrate 170 close to the transparent display portion 112, and the optical sensor 190 is configured to receive an optical signal.
In this embodiment, a glass cover 200 is disposed on a side of the upper polarizer 120 away from the liquid crystal cell 110.
When a finger touches the glass cover 200, the driving circuit controls the scattering-type liquid crystal in the transparent display part 112 to be aligned in the direction of the electric field, the light emitted from the first light source 150 is emitted from the lower light transmission hole 131 of the lower polarizer 130 through the light guide plate 140, and the light emitted from the lower light transmission hole 131 is not refracted or reflected through the transparent display part 112. The transparent display portion 112 now assumes a transparent state. The light passing through the transparent display part 112 is emitted to the finger through the upper light hole 121, reflected by the finger, and then passes through the transparent display part 112 to reach the optical sensor 190 disposed on the array substrate 170, thereby achieving the acquisition of the optical signal.
When the finger leaves the glass cover 200, the driving circuit controls the scattering type liquid crystal to deflect, and at this time, the light emitted from the second light source 160 reaches the human eye by the scattering of the scattering type liquid crystal in the transparent display part 112, thereby realizing the picture display.
In the embodiment of the present disclosure, the liquid crystal cell 110 is divided into the display portion 111 and the transparent display portion 112, the scattering liquid crystal is filled in the transparent display portion 112, the rotation of scattering liquid crystal molecules is controlled by the driving circuit of the display panel 100, and the upper polarizer 120 and the lower polarizer 130 are respectively provided with the upper light hole 121 and the lower light hole 131 corresponding to the transparent display portion 112, so that light emitted from the first light source 150 passes through the transparent display portion 112, the light passing rate is increased, the light of the first light source 150 is effectively utilized to realize optical identification, the use of an auxiliary light source to obtain an optical reflection signal of a fingerprint is avoided, and the success rate of identifying the fingerprint under the screen of the liquid crystal display device is improved.
The present disclosure further provides a display device, which includes the display panel, and the display device can achieve the same technical effects as the display panel, which are not described herein again.
In summary, although the present disclosure has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present disclosure, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, so that the scope of the present disclosure is defined by the appended claims.
Claims (5)
1. A display panel, comprising:
a liquid crystal cell including a display part and a transparent display part filled with a scattering type liquid crystal;
the upper polaroid is arranged on one side of the liquid crystal box, and is provided with an upper light transmission hole corresponding to the transparent display part; and
the lower polarizer is arranged on one side, away from the upper polarizer, of the liquid crystal box, and a lower light hole is formed in the lower polarizer and corresponds to the transparent display part;
the array substrate is arranged between the liquid crystal box and the lower polarizer;
the light guide plate is arranged on one side, away from the upper polarizer, of the lower polarizer;
the optical sensor is arranged on one side of the array substrate, which is close to the transparent display part, and is positioned in an orthographic projection area of the transparent display part;
a first light source disposed on a side of the light guide plate adjacent to the lower light transmission hole, and configured to provide light for displaying a picture and light for fingerprint recognition by the optical sensor to the display portion through the light guide plate, respectively;
and the second light source is arranged on one side of the display panel close to the transparent display part and is configured to provide light rays for displaying pictures for the transparent display part.
2. The display panel of claim 1, further comprising a color filter substrate disposed between the upper polarizer and the liquid crystal cell.
3. The display panel according to claim 2, wherein a driving circuit is provided on the array substrate, the driving circuit being configured to control deflection of the scattering-type liquid crystal of the transparent display portion.
4. The display panel of claim 1, wherein a glass cover plate is disposed on a side of the upper polarizer remote from the liquid crystal cell.
5. A display device characterized by comprising the display panel according to any one of claims 1 to 4.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910220700.4A CN110045557B (en) | 2019-03-22 | 2019-03-22 | Display panel and display device |
| PCT/CN2019/088090 WO2020191913A1 (en) | 2019-03-22 | 2019-05-23 | Display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910220700.4A CN110045557B (en) | 2019-03-22 | 2019-03-22 | Display panel and display device |
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| CN110045557A CN110045557A (en) | 2019-07-23 |
| CN110045557B true CN110045557B (en) | 2021-06-01 |
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| CN201910220700.4A Active CN110045557B (en) | 2019-03-22 | 2019-03-22 | Display panel and display device |
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| WO (1) | WO2020191913A1 (en) |
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| CN110456544B (en) * | 2019-07-26 | 2021-08-03 | 武汉华星光电技术有限公司 | Display panel control system and control method of display panel |
| KR20210073064A (en) * | 2019-12-10 | 2021-06-18 | 현대자동차주식회사 | Cluster having segment lcd cluster |
| CN110989257A (en) * | 2019-12-27 | 2020-04-10 | 惠州Tcl移动通信有限公司 | Display screen, display screen assembly and electronic equipment |
| CN111242012A (en) * | 2020-01-10 | 2020-06-05 | 京东方科技集团股份有限公司 | Display device with fingerprint identification function |
| CN113628530B (en) * | 2020-05-07 | 2023-09-26 | 群创光电股份有限公司 | Display device and mobile device |
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| WO2020191913A1 (en) | 2020-10-01 |
| CN110045557A (en) | 2019-07-23 |
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