WO2021213037A1 - 显示面板、显示装置和显示面板的制作方法 - Google Patents
显示面板、显示装置和显示面板的制作方法 Download PDFInfo
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- WO2021213037A1 WO2021213037A1 PCT/CN2021/079718 CN2021079718W WO2021213037A1 WO 2021213037 A1 WO2021213037 A1 WO 2021213037A1 CN 2021079718 W CN2021079718 W CN 2021079718W WO 2021213037 A1 WO2021213037 A1 WO 2021213037A1
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- substrate
- display panel
- fingerprint identification
- path adjustment
- optical path
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Images
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- 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
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Definitions
- the present disclosure relates to the field of display technology, and in particular to a display panel, a display device, and a manufacturing method of the display panel.
- the under-screen optical fingerprint recognition technology can use the light emitted by the screen as the light source.
- the light emitted by the screen will carry the fingerprint information of the finger after it shines on the finger above the screen.
- the light signal carrying fingerprint information will be received by the fingerprint sensor for fingerprint identification.
- the embodiment of the present disclosure provides a display panel, which includes:
- a display module including a fingerprint identification component
- a package cover, the package cover is located on the light emitting side of the display module
- each of the optical path adjustment devices includes: an optical fiber structure and a convex lens structure arranged oppositely, and the convex lens structure is located at the The side of the optical fiber structure facing away from the packaging cover; the optical path adjustment device is configured to adjust the incident finger reflected light so as to reduce the divergence angle of the light entering the fingerprint identification member.
- the fingerprint identification member includes a plurality of identification devices distributed in an array; a plurality of the optical path adjustment devices are distributed in an array;
- the center of the light exit of the optical fiber structure overlaps with the focal point of the convex lens structure.
- a first protective layer is further provided between the optical fiber structure and the convex lens structure.
- the refractive index of the first protective layer is smaller than the refractive index of the optical fiber structure and the convex lens structure.
- the optical path adjustment device is integrated on the packaging cover, and is integrated on the side of the packaging cover facing the display module.
- the display module includes a color filter substrate and an array substrate that are arranged oppositely, and the light path adjustment device is integrated on the color filter substrate.
- the color filter substrate includes a substrate, and the optical path adjustment device is integrated on a side of the substrate away from the array substrate.
- the display panel further includes a first polarizer, and the first polarizer is located on a side of the optical path adjustment device away from the substrate.
- the color filter substrate further includes a color filter layer on a side of the substrate away from the polarizer, and the fingerprint identification member is integrated on the color filter substrate and integrated in Between the substrate and the color film layer.
- the fingerprint identification member is integrated on the array substrate, and is integrated on the side of the array substrate facing the color filter substrate.
- the embodiment of the present disclosure further provides a display device, which includes the display panel provided in the embodiment of the present disclosure.
- the embodiment of the present disclosure further provides a manufacturing method of the display panel as provided in the embodiment of the present disclosure, wherein the manufacturing method includes:
- a fingerprint identification component is formed in the display module
- a plurality of optical path adjustment devices are formed between the packaging cover plate and the fingerprint identification member.
- the forming a plurality of optical path adjustment devices between the packaging cover plate and the fingerprint identification member includes:
- the packaging cover plate formed with the convex lens structure and the optical fiber structure is attached to the light exit side of the display module.
- the forming multiple fingerprint identification components in the display module includes:
- a fingerprint identification component is formed on the substrate side of the color filter substrate
- the color filter substrate formed with the color filter layer and the array substrate are boxed to form a display module.
- FIG. 1 is a schematic diagram of the structure of a related art display panel
- FIG. 2 is a schematic structural diagram of an optical path adjustment device provided on a packaging cover plate according to an embodiment of the present invention
- Figure 3 is a schematic diagram of light propagation provided by an embodiment of the present invention.
- FIG. 4 is a schematic structural view of the optical path adjustment device provided on the color filter substrate according to an embodiment of the present invention.
- FIG. 5 is a schematic structural diagram of a one-to-one correspondence between an identification device and an optical path adjustment device according to an embodiment of the present invention
- FIG. 6 is a schematic structural diagram of a plurality of optical path adjustment devices corresponding to one identification device according to an embodiment of the present invention
- FIG. 7 is a schematic diagram of the positions of an optical fiber structure and a convex lens structure provided by an embodiment of the present invention.
- FIG. 8 is a schematic structural diagram of a fingerprint identification component provided on a color filter substrate according to an embodiment of the present invention.
- FIG. 9 is a schematic structural diagram of a fingerprint identification component provided on an array substrate according to an embodiment of the present invention.
- FIG. 10 is a schematic diagram of a manufacturing process of a display panel provided by an embodiment of the present invention.
- the liquid crystal display may specifically include a display module 010, a package cover plate 07 on the light emitting side of the display module 010, and a side of the display module 010 away from the package cover plate 07.
- the backlight source 09; the display module 010 can specifically include a color filter substrate 001 and an array substrate 002 that are oppositely arranged, and a liquid crystal layer 05 located between the color filter substrate 001 and the array substrate 002; wherein the color filter substrate 001 can specifically include The first base substrate 021, the fingerprint identification member 03 located on the side of the first base substrate 021 facing away from the package cover 07, and the color film layer located on the side of the fingerprint recognition member 03 away from the package cover 07 (color film layer specific It may include a red color resistor 041, a green color resistor 043, and a blue color resistor 042), and a first polarizer 061 located on the side of the first base substrate 021 facing the package cover 07; the array substrate 002 may specifically include a second substrate
- the base substrate 011 is a second polarizer 062 located on the side of the second base substrate 011 away from the color filter substrate 001.
- the fingerprint identification component 03 is made on the color film substrate 001, and the light emitted by the backlight 09 passes through the display module 010 and the encapsulation cover 07 and is reflected by the user's fingerprint back to the fingerprint identification component 03, reflecting from the fingerprint peaks and fingerprint valleys. There is a difference in the intensity of the returned light, and by using the difference in light intensity, fingerprint identification can be realized through the photoelectric conversion of the fingerprint identification member 03. As shown in FIG.
- the ordinary fingerprint identification member 03 because the light emitted by the backlight 09 passes through a long transmission path, when it is irradiated on the fingerprint identification member 03, the divergence angle of the light is large, causing the fingerprint peaks and valleys to reflect The returned light spots (stripes) cannot be clearly separated on the fingerprint sensor, which will cause a decline in the recognition ability.
- an embodiment of the present invention provides a display panel, which includes:
- the display module 100 includes the fingerprint identification member 3;
- the packaging cover 7 is located on the light-emitting side of the display module 100.
- the upper side of the display module 100 is the light-emitting side
- the packaging cover 7 may be located above the display module 100.
- the light-emitting side may specifically be the side of the display screen viewed by the user when using the display panel, and the packaging cover 7 may specifically be a glass cover;
- each optical path adjustment device 8 includes: an optical fiber structure 81 and a convex lens structure 82 disposed oppositely, and the convex lens structure 82 is located in the optical fiber structure 81 The side facing away from the package cover plate 7; the optical path adjustment device 8 is configured to adjust the incident finger reflected light so as to reduce the divergence angle of the light entering the fingerprint identification member 3.
- an optical path adjustment device 8 is provided between the packaging cover 7 and the fingerprint identification member 3, and the optical path adjustment device 8 can adjust the optical path of the reflected light of the finger incident on the optical path adjustment device 8 to make
- the divergence angle of the light entering the fingerprint recognition member is reduced, as shown in FIG. 3, that is, the divergence angle of the relatively emitted light originally incident on the fingerprint recognition member 3 can be reduced, and the divergence angle of the light can be improved.
- the light spots (stripes) reflected back from the fingerprint peaks and valleys cannot be clearly separated on the fingerprint identification member 3, which leads to the problem of reduced fingerprint identification ability.
- the display panel provided by the embodiment of the present disclosure may be a liquid crystal display panel.
- the display module may include a color filter substrate 110 and an array substrate 120 arranged oppositely, a liquid crystal layer 5 located between the color filter substrate 110 and the array substrate 120, and a first polarizer located on the side of the color filter substrate 110 facing away from the array substrate 120 61.
- the color filter substrate 110 may include a substrate 21 located at The base substrate 21 faces the color filter layer on the side of the array substrate 120 (the color filter layer can specifically protect the red color resistance 41, the green color resistance 43, and the blue color resistance 42); the array substrate 120 can specifically include the second substrate 11 (color The substrate 21 of the film substrate 110 may specifically be used as the first substrate), and the second polarizer 62 on the side of the second substrate 11 away from the color filter substrate 110.
- the position of the optical path adjustment device 8 may be specifically integrated in the packaging cover 7 or integrated in the display module 100, which will be described below by specific examples.
- the optical path adjusting device 8 is integrated on the packaging cover 7, specifically, the optical path adjusting device 8 is integrated on the side of the packaging cover 7 facing the display module 100. That is, during specific production, the optical path adjustment device 8 may be formed on the package cover plate 7, and then the package cover plate 7 formed with the optical path adjustment device 8 and the display module 100 may be bonded. In the embodiment of the present disclosure, the optical path adjustment device 8 is integrated on the side of the packaging cover 7 facing the display module 100. Since the fingerprint identification member 3 is located in the display module 100, the optical path adjustment device 8 can be located on the finger and fingerprint identification.
- the optical path adjusting structure 8 in the embodiment of the present disclosure is fabricated on the package
- the side of the cover plate 7 facing the display module 100 can prevent the light path adjustment structure 8 from being worn out during the use of the display panel, which affects the light adjustment accuracy of the light path adjustment device 8.
- the light path adjustment device 8 is integrated in the display module 100. Specifically, the light path adjustment device 8 is integrated on the color filter substrate 110, and specifically integrated on the offset array of the substrate 21 of the color filter substrate 110. One side of the substrate 120, that is, the side facing the package cover plate 7. Specifically, the color filter substrate 110 includes a substrate 21, and the optical path adjustment device 8 may be specifically integrated between the substrate 21 and the first polarizer 61. That is, during specific production, the optical path adjustment device 8 may be formed on the side of the substrate 21 of the color filter substrate 110, and then the first polarizer 61 may be attached to the side of the optical path adjustment device 8 away from the substrate 21.
- the fingerprint identification component 3 in the embodiment of the present disclosure may be a full-screen fingerprint identification component, and fingerprint identification can be realized at any position of the display panel.
- the fingerprint identification member 3 includes a plurality of identification devices 30 distributed in an array, a plurality of optical path adjustment devices 8 are distributed in an array, the orthographic projection of the identification device 30 on the package cover 7 and at least one optical path adjustment device 8 on the package cover
- the orthographic projection of 7 has an overlapping area.
- the identification device 30 corresponds to the optical path adjustment device 8 one-to-one, and the orthographic projection of the identification device 30 on the package cover 7 and the orthographic projection of one optical path adjustment device 8 on the package cover 7 have overlapping areas.
- the identification device 30 and the optical path adjustment device 8 that narrows the divergence angle of the light can be in one-to-one correspondence.
- one identification device 30 corresponds to multiple optical path adjustment devices 8, and the orthographic projection of the identification device 30 on the package cover 7 and multiple (three in FIG. 5)
- the optical path adjustment device 8 has an overlapping area in the orthographic projection of the package cover 7. That is, if the area of the identification device 30 is much larger than the area of the light path adjustment device 8 with narrowed light, one identification device 30 can be used to correspond to multiple optical path adjustment devices. 8. Make the identification device 30 more light rays with a smaller divergence angle.
- each optical path adjustment device 80 includes an optical fiber structure 81 and a convex lens structure 82 that are opposed to each other. For the light reflected by the finger, it first passes through the optical fiber structure 81 and then enters the convex lens structure 82. By controlling the optical fiber structure 81 and The positional relationship of the convex lens structure 82 can make the light incident on the optical path adjustment device 80 output as parallel light or approximately parallel light.
- the arrangement of the optical fiber structure 81 can collect the light incident to the optical path adjusting device in different directions, and perform total reflection therein, so as to concentrate the light and transmit it with low loss.
- the center of the light exit of the optical fiber structure 81 in the embodiment of the present disclosure and the convex lens
- the focus overlap of the structure 82 can also be understood as the position difference between the center of the light exit port of the optical fiber structure 81 and the focus of the convex lens structure 82 within a preset range, and both can be understood as the two overlap.
- a first protective layer 83 is also provided between the optical fiber structure 81 and the convex lens structure 82. That is, in specific implementation, the optical fiber structure 81 can be formed first, and then the first protective layer 83 is formed on the surface of the optical fiber structure 81, and then the convex lens structure 82 is formed. Specifically, the refractive index of the first protective layer 83 is smaller than that of the optical fiber structure. 81. The refractive index of the convex lens structure 82.
- first protective layer 83 between the optical fiber structure 81 and the convex lens structure 82, which can protect the optical fiber structure 81, and the refractive index of the first protective layer 83 is less than the refractive index of the optical fiber structure 81.
- the light can be totally reflected inside and always transmitted in the optical fiber structure 81; the refractive index of the first protective layer 83 is smaller than the refractive index of the convex lens structure 82, so that the convex lens structure 82 can have the function of converging light.
- the fingerprint identification member 3 in the embodiment of the present disclosure, it may be integrated in the color filter substrate 110 or the array substrate 120, which will be described below with specific examples.
- Fig. 8 shows a specific structural distribution diagram of the fingerprint identification member 3, which is located between the substrate 21 and the color film layer. That is, in the embodiment of the present disclosure, the fingerprint identification member 3 is integrated on the color filter substrate 110 and is located between the substrate 21 and the color filter layer of the color filter substrate 110. In the specific production, the fingerprint identification member 3 can be first passed through the mask and exposed. , Development, etching, and other processes to complete the production of the fingerprint identification member 3, after which the red, green, and blue barriers, black matrix, and columnar spacers are produced to complete the production of the color film substrate 110.
- the fingerprint identification component 3 when the fingerprint identification component 3 is integrated on the color filter substrate 110, the fingerprint identification component 3 may specifically include a first transistor 300 located on the substrate 21 for driving the fingerprint identification component 3, and a first transistor 300 located on the first transistor 300.
- the identification device 30 on the side away from the base substrate 21; the first transistor 300 may include a light-shielding layer 31, a first insulating layer 22, an active layer 32, a second insulating layer 23, and a gate 33 sequentially located on the substrate 21 ,
- the third insulating layer 24, the source/drain layer (which may specifically include the source electrode 34 and the drain electrode 35), and the fourth insulating layer 25;
- the second electrode 36, the photosensitive film layer 37, the first electrode 38; the color filter substrate 110 may be further provided with a flat layer 26, a third electrode 391, and a fifth insulating layer on the side of the first electrode 38 facing away from the identification device 30.
- the identification device 30 may be specifically located between adjacent color resistors, that is, at the location of the black matrix 44, so as to avoid the location of the pixels and perform normal display.
- the second electrode 36 may be electrically connected to one of the source electrode or the drain electrode in the source-drain layer through a via hole penetrating the fourth insulating layer 25; the third electrode 391 may be electrically connected to the first electrode through a via hole penetrating the planarization layer 26.
- the third electrode 391 may specifically be a signal line that provides electrical signals to the first electrode 38.
- the array substrate 120 may include a second base substrate 11, and a common electrode 12 on the side of the second base substrate 11 facing the color filter substrate 110 (the common electrode 12 is multiplexed as a touch emitting electrode), The sixth insulating layer 13, the pixel electrode 14.
- the array substrate 120 may also be provided with a second polarizer 62 on the side of the second base substrate 11 that is away from the color filter substrate 110, and the second polarizer 62 may specifically be connected to the color filter.
- the polarization directions of the polarizer 61 (that is, the first polarizer) of the substrate 110 are perpendicular to each other.
- a liquid crystal layer 5 is provided between the color filter substrate 110 and the array substrate 120.
- the side of the display module 100 facing away from the packaging cover 7 may also be specifically provided with a backlight source 9, and the light reflected by the finger may specifically be the light irradiated by the backlight source 9 to the finger.
- the fingerprint identification component 3 is integrated on the array substrate 110, specifically, the fingerprint identification component 3 is integrated on the side of the array substrate 120 facing the color filter substrate 110.
- the array substrate 120 specifically includes a transistor 300 located on the second base substrate 11 for driving the identification device 30, and a transistor 300 located on the transistor 300.
- the identification device 30 on the side away from the base substrate 00; wherein the transistor 300 may include a first insulating layer 22, an active layer 32, and a gate layer (the gate layer may specifically include The gate 33, the transmitting electrode 15, the receiving electrode 16), the second insulating layer 23, the source and drain layer (which may specifically include the source electrode 34 and the drain electrode 35), and the third insulating layer 24; the identification device 30 may include The second electrode 36, the photosensitive film layer 37, and the first electrode 38 on the three insulating layers 24; the array substrate 120 on the side of the first electrode 38 away from the photosensitive film layer 37 may also be provided with a flat layer 25 and a third electrode 38 in sequence.
- the color filter substrate 110 may be specifically provided with a base substrate 21 (that is, a first base substrate), and a red color resist 41, a green color resist 42 and a blue color resist 43 on the side of the base substrate 21 facing the array substrate 120.
- the display module 100 may also be provided with a liquid crystal layer 5 between the color filter substrate 110 and the array substrate 120, and a first polarizer 61 may be provided on the side of the color filter substrate 110 facing away from the array substrate 120.
- a second polarizer 62 may also be provided on one side of the color filter substrate 110.
- the display module 110 may also be provided with a backlight source 9 on the side facing away from the packaging cover 7.
- embodiments of the present disclosure also provide a display device, which includes the display panel provided by the embodiments of the present disclosure.
- an embodiment of the present disclosure further provides a method for manufacturing a display panel as provided by the embodiment of the present disclosure, wherein the manufacturing method includes:
- Step S101 forming a fingerprint identification component in the display module.
- Step S102 forming a plurality of optical path adjustment devices between the packaging cover plate and the fingerprint identification member. Specifically, regarding this step S102, forming a plurality of optical path adjustment devices between the packaging cover plate and the fingerprint identification member includes:
- S1024 Attach the packaging cover plate formed with the convex lens structure and the optical fiber structure to the light emitting side of the display module.
- forming a plurality of fingerprint identification components in the display module includes:
- Step S1011 forming a fingerprint identification member on the substrate side of the color filter substrate
- Step S1012 forming a second protective layer on the side of the fingerprint identification member away from the substrate;
- Step S1014 aligning the color filter substrate with the color filter layer and the array substrate to form a display module.
- an optical path adjustment device is arranged between the packaging cover and the fingerprint identification member, and the optical path adjustment device can adjust the optical path of the reflected light of the finger incident on the optical path adjustment device.
- the optical path adjustment device can adjust the optical path of the reflected light of the finger incident on the optical path adjustment device.
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Abstract
Description
Claims (15)
- 显示面板,其中,包括:显示模组,所述显示模组包括指纹识别构件;封装盖板,所述封装盖板位于所述显示模组的出光侧;多个光路调整器件,所述光路调整器件位于所述封装盖板与所述指纹识别构件之间,每一所述光路调整器件包括:相对设置的光纤结构和凸透镜结构,所述凸透镜结构位于所述光纤结构的背离所述封装盖板的一侧;所述光路调整器件被配置为对入射的手指反射光进行调整,以使进入所述指纹识别构件的光的发散角减小。
- 如权利要求1所述的显示面板,其中,所述指纹识别构件包括多个呈阵列分布的识别器件;多个所述光路调整器件呈阵列分布;所述识别器件在所述封装盖板的正投影与至少一个所述光路调整器件在所述封装盖板的正投影存在交叠区域。
- 如权利要求2所述的显示面板,其中,所述光纤结构的出光口的中心与所述凸透镜结构的焦点重叠。
- 如权利要求1所述的显示面板,其中,所述光纤结构与所述凸透镜结构之间还设置有第一保护层。
- 如权利要求4所述的显示面板,其中,所述第一保护层的折射率小于所述光纤结构、所述凸透镜结构的折射率。
- 如权利要求1-5任一项所述的显示面板,其中,所述光路调整器件集成于所述封装盖板,并集成于所述封装盖板的面向所述显示模组的一侧。
- 如权利要求1-5任一项所述的显示面板,其中,所述显示模组包括相对设置的彩膜基板和阵列基板,所述光路调整器件集成于所述彩膜基板。
- 如权利要求7所述的显示面板,其中,所述彩膜基板包括衬底,所述光路调整器件集成于所述衬底的背离所述阵列基板的一侧。
- 如权利要求8所述的显示面板,其中,所述显示面板还包括第一偏光 片,所述第一偏光片位于所述光路调整器件的背离所述衬底的一侧。
- 如权利要求9所述的显示面板,其中,所述彩膜基板还包括位于所述衬底的背离所述偏光片一侧的彩膜层,所述指纹识别构件集成于所述彩膜基板,并集成于所述衬底与所述彩膜层之间。
- 如权利要求7所述的显示面板,其中,所述指纹识别构件集成于所述阵列基板,并集成于所述阵列基板的面向所述彩膜基板的一侧。
- 一种显示装置,其中,包括如权利要求1-11任一项所述的显示面板。
- 一种如权利要求1-11任一项所述的显示面板的制作方法,其中,所述制作方法包括:在显示模组内形成指纹识别构件;在封装盖板与所述指纹识别构件之间形成多个光路调整器件。
- 如权利要求13所述的制作方法,其中,所述在封装盖板与所述指纹识别构件之间形成多个光路调整器件,包括:在所述封装盖板的一侧通过纳米压印工艺形成多个光纤结构;在所述光纤结构的背离所述封装盖板的一侧形成第一保护层;在所述第一保护层的背离所述光纤结构的一侧通过纳米压印工艺形成多个凸透镜结构;将形成有所述凸透镜结构和所述光纤结构的所述封装盖板贴合于所述显示模组的出光侧。
- 如权利要求13所述的制作方法,其中,所述在显示模组内形成多个指纹识别构件,包括:在彩膜基板的衬底一侧形成指纹识别构件;在所述指纹识别构件的背离所述衬底的一侧形成第二保护层;在所述第二保护层的背离所述指纹识别构件的一侧形成彩膜层;将形成有所述彩膜层的所述彩膜基板与阵列基板对盒,形成显示模组。
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EP3647995A1 (en) * | 2018-09-21 | 2020-05-06 | Shenzhen Goodix Technology Co., Ltd. | Fingerprint identification apparatus and electronic device |
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CN111133444B (zh) * | 2019-10-21 | 2023-10-13 | 深圳市汇顶科技股份有限公司 | 指纹识别装置和电子设备 |
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US10614283B2 (en) * | 2017-03-07 | 2020-04-07 | Shenzhen GOODIX Technology Co., Ltd. | Devices with peripheral task bar display zone and under-LCD screen optical sensor module for on-screen fingerprint sensing |
CN110501833A (zh) * | 2019-08-27 | 2019-11-26 | 厦门天马微电子有限公司 | 一种显示装置 |
CN210052180U (zh) * | 2019-12-27 | 2020-02-11 | 深圳阜时科技有限公司 | 光学检测装置和电子设备 |
CN111507273A (zh) * | 2020-04-20 | 2020-08-07 | 京东方科技集团股份有限公司 | 显示面板、显示装置和显示面板的制作方法 |
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CN111507273A (zh) | 2020-08-07 |
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