Transmissive display module and electronic device thereof

Abstract

The application provides a see-through display module and an electronic device thereof. The see-through display module comprises a light-transmitting substrate, a first wire, a first electrode string, a first barrier layer, a second barrier layer, an organic light-emitting material layer, a second electrode string and a second wire. A lower surface of the first electrode string is provided with a plurality of spaced-apart reflective layers, and light can penetrate through the gaps between the reflective layers.

Description

Technical Field

[0001] This application relates to a display module, and more particularly to a transmissive display module and its electronic device. Background Technology

[0002] Organic light-emitting diodes (OLEDs) are widely used in small electronic devices such as game consoles, mobile phones, PDAs, smartwatches, and smart bracelets. Based on the light emission method of OLED display modules, they can be broadly categorized into upward-emitting, downward-emitting, and transmissive emission modes. On the other hand, optical fingerprint recognition modules with fingerprint identification capabilities are also widely used in electronic devices. However, if the display module of the electronic device uses a transmissive emission mode, when a user performs fingerprint recognition, the optical fingerprint recognition module may simultaneously receive the light emitted by the light-emitting units (pixels) and the light signal reflected from the user's finger. This could lead to misinterpretation of the fingerprint light signal by the optical fingerprint sensing module.

[0003] Therefore, the technical problem to be solved in this application is how to provide a transmissive display module that can avoid misjudgment by the optical fingerprint sensing module and improve the accuracy of fingerprint recognition. Summary of the Invention

[0004] The main objective of this application is to provide a transmissive display module and its electronic device that can avoid misjudgment by the optical fingerprint sensing module and improve the accuracy of fingerprint recognition.

[0005] To achieve the aforementioned objectives, this application provides a transmissive display module, comprising: a light-transmitting substrate; a plurality of first conductive lines formed on the light-transmitting substrate and extending along a first direction; a plurality of first electrode arrays formed on the first conductive lines; a first barrier layer covering the first electrode arrays and forming a plurality of sub-pixel regions at positions corresponding to the first electrode arrays; a plurality of second barrier layers formed on the first barrier layers to form a plurality of main pixel regions, wherein the sub-pixel regions are located within the main pixel regions; an organic light-emitting material layer formed on the first barrier layers and the second barrier layers, and forming a plurality of light-emitting units in the sub-pixel regions; a plurality of second electrode arrays formed on the organic light-emitting material layers and extending along a second direction; and a plurality of second conductive lines formed on the light-transmitting substrate and electrically connected to the second electrode arrays; wherein a plurality of reflective layers corresponding to the sub-pixel regions are included between the first conductive lines and the first electrode arrays.

[0006] In the preferred embodiment described above, the transmissive display module further includes a first display area and a second display area, wherein the first display area has a reflective layer and the second display area does not have a reflective layer.

[0007] In the preferred embodiment described above, the materials of the first conductor and the first electrode array are: indium tin oxide, indium zinc oxide, zinc oxide or tin dioxide, and the materials of the second electrode array are: aluminum or silver.

[0008] In the preferred embodiment described above, the material of the plurality of reflective layers is: molybdenum-tantalum alloy, molybdenum, or copper.

[0009] This application also provides an electronic device, including: a transmissive display module, comprising: a light-transmitting substrate; a plurality of first conductive lines formed on the light-transmitting substrate and extending along a first direction; a plurality of first electrode arrays formed on the first conductive lines; a first barrier layer covering the first electrode arrays and forming a plurality of sub-pixel regions at positions corresponding to the first electrode arrays; a plurality of second barrier layers formed on the first barrier layers to form a plurality of main pixel regions, wherein the sub-pixel regions are located within the main pixel regions; an organic light-emitting material layer formed on the first barrier layer and the second barrier layer, and forming a plurality of light-emitting units in the sub-pixel regions; a plurality of second electrode arrays formed on the organic light-emitting material layer and extending along a second direction; and a plurality of second conductive lines formed on the light-transmitting substrate and electrically connected to the second electrode arrays; a housing for integration with the transmissive display module; and an optical fingerprint sensing module disposed below the transmissive display module; wherein, a plurality of reflective layers corresponding to the sub-pixel regions are included between the first conductive lines and the first electrode arrays.

[0010] In the preferred embodiment described above, the transmissive display module further includes a first display area and a second display area, wherein the first display area has a reflective layer and the second display area does not have a reflective layer.

[0011] In the preferred embodiment described above, the optical fingerprint sensing module is disposed below the first display area.

[0012] In the preferred embodiment described above, the materials of the first conductor and the first electrode array are: indium tin oxide, indium zinc oxide, zinc oxide or tin dioxide, and the materials of the second electrode array are: aluminum or silver.

[0013] In the preferred embodiment described above, the material of the reflective layer is: molybdenum-tantalum alloy, molybdenum, or copper.

[0014] The beneficial effect of this application is that the transmissive display module can reduce the misjudgment of light signals by the optical fingerprint sensing module by utilizing the reflective layer. On the other hand, by increasing the number of light-emitting units (pixels) per unit area, the resolution of the light signal reflected from the fingerprint can be further improved, thereby effectively improving the accuracy of fingerprint recognition by the optical fingerprint sensing module. Attached Figure Description

[0015] Figure 1 This is a top view of the transmissive display module provided in this application;

[0016] Figure 2A for Figure 1 A cross-sectional view of the transmissive display module along line segment A-A';

[0017] Figure 2B for Figure 1 A cross-sectional view of the transmissive display module along line segment B-B';

[0018] Figure 3A A schematic diagram of the transmissive display module provided in this application disposed in an electronic device; and

[0019] Figure 3B for Figure 3A A magnified view of region C in the middle.

[0020] Explanation of reference numerals in the attached figures

[0021] C: Area

[0022] L1, L2: Light rays

[0023] 1: Electronic devices

[0024] 10: Transmissive display module

[0025] 101: First Display Area

[0026] 102: Second display area

[0027] 11: Transparent substrate

[0028] 12: First conductor

[0029] 13: First electrode tandem

[0030] 14: Reflective layer

[0031] 15: First barrier layer

[0032] 151: Subpixel area

[0033] 16: Second barrier layer

[0034] 161: Main pixel area

[0035] 17: Organic light-emitting material layer

[0036] 171: Light-emitting unit

[0037] 18: Second electrode tandem

[0038] 19: Second conductor

[0039] 20: Shell

[0040] 30: Optical fingerprint sensing module

[0041] 9: Fingers

[0042] 91: Fingerprint. Detailed Implementation

[0043] The advantages and features of this application, as well as the methods for achieving them, will be more readily understood through a more detailed description with reference to exemplary embodiments and accompanying drawings. However, this application may be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments provided will enable this disclosure to more thoroughly and completely convey the scope of this application to those skilled in the art.

[0044] The physiological detection module provided in this application is manufactured using a process related to passive organic light-emitting diodes, which is known to those skilled in the art, and the process details will not be elaborated here.

[0045] First, please refer to Figure 1 , Figure 2A and Figure 2B As shown. Figure 1 This is a top view of the transmissive display module provided in this application; Figure 2A for Figure 1 A cross-sectional view of the transmissive display module along line segment A-A'; Figure 2B for Figure 1 A cross-sectional view of the transmissive display module along line segment B-B'. The transmissive display module 10 includes: a light-transmitting substrate 11, a plurality of first conductive lines 12, a plurality of first electrode arrays 13, a plurality of reflective layers 14, a first barrier layer 15, a plurality of second barrier layers 16, an organic light-emitting material layer 17, a plurality of second electrode arrays 18, and a plurality of second conductive lines 19.

[0046] The first conductive line 12 is formed on the light-transmitting substrate 11 and extends along a first direction. In this embodiment, the first conductive line 12 extends along the X-axis direction; and the first electrode array 13 is formed on the first conductive line 12, so that the first electrode array 13 also extends along the X-axis direction. The materials of the first conductive line 12 and the first electrode array 13 can be indium tin oxide, indium zinc oxide, zinc oxide, or tin dioxide. On the other hand, the plurality of reflective layers 14 are disposed between the first conductive line 12 and the first electrode array 13, wherein the material of the reflective layers 14 can be a molybdenum-tantalum alloy, molybdenum, or copper. In some possible embodiments, a plurality of spaced reflective layers 14 can be formed on the surface of the first conductive line 12 by vapor deposition, and then the first electrode array 13 can be formed on the first conductive line 12.

[0047] The first barrier layer 15 covers the first electrode array 13 and forms a plurality of recessed subpixel regions 151 at positions corresponding to the first electrode array 13, exposing a portion of the first electrode array 13 within the subpixel regions 151. The subpixel regions 151 are positioned corresponding to the underlying reflective layer 14. Next, a plurality of trapezoidal second barrier layers 16 are optionally formed on the first barrier layer 15 to form a plurality of main pixel regions 161, with the plurality of subpixel regions 151 located within the main pixel regions 161. In this embodiment, each main pixel region 161 contains four subpixel regions 151.

[0048] The organic light-emitting material layer 17 is formed on the first barrier layer 15 and the second barrier layer 16, and a plurality of light-emitting units 171 are formed in the sub-pixel region 151, and the light-emitting unit 171 is the so-called pixel.

[0049] The plurality of second electrode arrays 18 are formed on the organic light-emitting material layer 17 and are separated by the second barrier layer 16, so that the second electrode arrays 18 extend along a second direction. In this embodiment, the second electrode arrays 18 extend along the Y-axis direction. On the other hand, a plurality of second conductive lines 19 are formed on the light-transmitting substrate 11 and are electrically connected to the second electrode arrays 18. In this embodiment, one end of the second electrode arrays 18 partially covers the second conductive lines 19 and is electrically connected to the second conductive lines 19.

[0050] The first wire 12 and the second wire 19 can be electrically connected to other electronic components in the electronic device. In this embodiment, the first wire 12 and the first electrode array 13 serve as the anode of the transmissive display module 10; while the second wire 19 and the second electrode array 18 serve as the cathode. When power is supplied to the transmissive display module 10 via the first wire 12 and the second wire 19, the light-emitting unit 171 located between the first electrode array 13 and the second electrode array 18 is excited to generate light.

[0051] Figure 3A A schematic diagram of the transmissive display module provided in this application disposed in an electronic device; Figure 3B for Figure 3A Enlarged view of region C. The electronic device 1 is a small electronic device with fingerprint recognition function, comprising: a transmissive display module 10, a housing 20, and an optical fingerprint sensing module 30. The housing 20 can be combined with the transmissive display module 10 to form a sealed accommodating space, which can be used to accommodate and configure other electronic components (not shown) of the electronic device 1 and the optical fingerprint sensing module 30. In this embodiment, the transmissive display module 10 includes a first display area 101 and a second display area 102, wherein the first display area 101 has a reflective layer 14 (e.g., ...). Figure 2A and Figure 2B (as shown); while the second display area 102 does not have a reflective layer 14. On the other hand, the optical fingerprint sensing module 30 is disposed below the first display area 101, and the user can press the first display area 101 with their finger 9 to perform fingerprint recognition. The electronic device 1 described in this application may be: an access control display device and a fingerprint security device or a safe integrated fingerprint security device, but is not limited to the aforementioned devices.

[0052] Please continue reading. Figure 3B First of all, it should be noted that... Figure 3B The existing structure of the transmissive display module, including the encapsulation components and cover plate, is omitted from the drawing. When a user performs fingerprint recognition, the light-emitting unit 171, i.e., the pixel, emits a light beam L1 towards the fingerprint 91 of the finger 9. The illuminated fingerprint 91 then reflects a light beam L2. Subsequently, the light beam L2 passes through the gaps between the reflective layers 14 and is transmitted to the optical fingerprint sensing module 30. Due to the arrangement of the reflective layers 14, the optical fingerprint sensing module 30 does not receive some of the downward-emitted light beam L1, thereby reducing the misinterpretation of the light signal from the fingerprint 91 by the optical fingerprint sensing module 30. On the other hand, since each main pixel area 161 contains multiple light-emitting units 171, the resolution of the light signal reflected from the fingerprint 91 can be further improved, thereby effectively improving the fingerprint recognition accuracy of the optical fingerprint sensing module 30.

[0053] Compared to existing technologies, the transmissive display module provided in this application utilizes a reflective layer to effectively reduce misinterpretation of light signals by the optical fingerprint sensing module. Furthermore, by increasing the number of light-emitting units (pixels) per unit area, the resolution of the light signal reflected from the fingerprint is further improved, thereby effectively enhancing the accuracy of fingerprint recognition by the optical fingerprint sensing module. Therefore, this application is a creation with significant industrial value.

[0054] This application may be modified in various ways by those skilled in the art, but all such modifications shall not depart from the protection sought by the appended claims.

Claims

1. A transmissive display module, characterized in that, include: a light-transmissive substrate; Multiple first conductive lines are formed on the light-transmitting substrate and extend along a first direction; Multiple first electrodes are connected in series and formed on the multiple first wires; A first barrier layer covers the plurality of first electrode arrays and forms a plurality of sub-pixel regions at positions corresponding to the plurality of first electrode arrays; Multiple second barrier layers are formed on the first barrier layer to form multiple main pixel regions, and the multiple sub-pixel regions are located within the multiple main pixel regions; An organic light-emitting material layer is formed on the first barrier layer and the plurality of second barrier layers, and a plurality of light-emitting units are formed in the plurality of sub-pixel regions; Multiple second electrodes are arranged in series on the organic light-emitting material layer and extend along a second direction; as well as Multiple second conductive lines are formed on the light-transmitting substrate and electrically connected in series with the multiple second electrodes; The plurality of first conductors and the plurality of first electrode arrays include a plurality of reflective layers corresponding to the plurality of sub-pixel regions.

2. The transmissive display module as described in claim 1, characterized in that, The transmissive display module further includes a first display area and a second display area, wherein the first display area has the plurality of reflective layers and the second display area does not have the plurality of reflective layers.

3. The transmissive display module as described in claim 1, characterized in that, The materials of the plurality of first conductors and the plurality of first electrode arrays are: indium tin oxide, indium zinc oxide, zinc oxide or tin dioxide, and the materials of the plurality of second electrode arrays are: aluminum or silver.

4. The transmissive display module as described in claim 1, characterized in that, The materials for these multiple reflective layers are: molybdenum-tantalum alloy, molybdenum, or copper.

5. An electronic device, characterized in that, include: A transmissive display module, comprising: a light-transmissive substrate; Multiple first conductive lines are formed on the light-transmitting substrate and extend along a first direction; Multiple first electrodes are connected in series and formed on the multiple first wires; A first barrier layer covers the plurality of first electrode arrays and forms a plurality of sub-pixel regions at positions corresponding to the plurality of first electrode arrays; Multiple second barrier layers are formed on the first barrier layer to form multiple main pixel regions, and the multiple sub-pixel regions are located within the multiple main pixel regions; An organic light-emitting material layer is formed on the first barrier layer and the plurality of second barrier layers, and a plurality of light-emitting units are formed in the plurality of sub-pixel regions; Multiple second electrodes are arranged in series on the organic light-emitting material layer and extend along a second direction; and Multiple second conductive lines are formed on the light-transmitting substrate and electrically connected in series with the multiple second electrodes; A housing for integration with the transmissive display module; and An optical fingerprint sensing module is located below the transmissive display module; The plurality of first conductors and the plurality of first electrode arrays include a plurality of reflective layers corresponding to the plurality of sub-pixel regions.

6. The electronic device as claimed in claim 5, characterized in that, The transmissive display module further includes a first display area and a second display area, wherein the first display area has the plurality of reflective layers and the second display area does not have the plurality of reflective layers.

7. The electronic device as claimed in claim 6, characterized in that, The optical fingerprint sensing module is located below the first display area.

8. The electronic device as claimed in claim 5, characterized in that, The materials of the plurality of first conductors and the plurality of first electrode arrays are: indium tin oxide, indium zinc oxide, zinc oxide or tin dioxide, and the materials of the plurality of second electrode arrays are: aluminum or silver.

9. The electronic device as claimed in claim 5, characterized in that, The materials for these multiple reflective layers are: molybdenum-tantalum alloy, molybdenum, or copper.

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