TWI771866B - Transmissive display module and electronic device using the sam - Google Patents

Abstract

The present invention provides a transmissive display module and an electronic device thereof. The transmissive display module includes: a light-transmitting substrate, a first wire, a first electrode series, a first barrier layer, a second barrier layer, and an organic luminescent material layer, the second electrode series and the second wire. Wherein, the lower surface of the first electrode series is provided with a plurality of reflective layers arranged at intervals, and light can penetrate through the gaps between the reflective layers.

Description

Transmissive display module and electronic device thereof

The present invention relates to a display module, in particular to a transmissive display module and an electronic device thereof.

Organic light-emitting diodes have been widely used in small-sized electronic devices, such as game consoles, mobile phones, PDAs, smart watches or smart bracelets. According to the light emitting mode of the organic light emitting diode display module, it can be roughly divided into upward light emitting, downward light emitting and full penetration light emitting modes. On the other hand, optical fingerprint recognition modules with fingerprint recognition function have also been widely installed in electronic devices. However, if the display module configured in the electronic device is a fully-transmissive light-emitting mode, when the user is performing fingerprint identification, the optical fingerprint identification module may simultaneously receive the light emitted by the light-emitting unit, that is, the pixel. , and the optical signal reflected from the user's finger, which may lead to misjudgment of the fingerprint optical signal by the optical fingerprint sensing module.

Therefore, how to provide a transmissive display module that can avoid misjudgment by the optical fingerprint sensing module and improve the accuracy of fingerprint identification is the technical subject to be solved by the present invention.

The main purpose of the present invention is to provide a transmissive display module and its electronic device which can avoid misjudgment of the optical fingerprint sensing module and improve the accuracy of fingerprint identification.

In order to achieve the aforementioned purpose, the present invention provides a transmissive display module, comprising: light-transmitting substrate; a plurality of first wires, formed on the transparent substrate and extending along the first direction; a plurality of first electrode series formed on the first wires; a first blocking layer covering the first electrode series and forming a plurality of sub-pixel regions at positions corresponding to the first electrode series; A plurality of second blocking layers are formed on the first blocking layers to form a plurality of main pixel regions, and the sub pixel regions are located in the main pixel region; an organic light-emitting material layer, formed on the first blocking layer and the second blocking layer, and forming a plurality of light-emitting units in the sub-pixel region; a plurality of second electrode series, formed on the organic light-emitting material layer and extending along the second direction; and a plurality of second wires formed on the transparent substrate and electrically connected in series with the second electrodes; Wherein, a plurality of reflective layers corresponding to the sub-pixel regions are included between the first wires and the first electrode series.

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

In the above preferred embodiment, the material of the first wire and the first electrode series is indium tin oxide, indium zinc oxide, zinc oxide or tin dioxide, and the material of the second electrode series is aluminum or silver.

In the above preferred embodiment, the materials of the reflective layers are: molybdenum-tantalum alloy, molybdenum or copper.

The present invention also provides an electronic device, comprising: Transmissive display module, including: light-transmitting substrate; a plurality of first wires, formed on the transparent substrate and extending along the first direction; a plurality of first electrode series formed on the first wires; a first blocking layer covering the first electrode series and forming a plurality of sub-pixel regions at positions corresponding to the first electrode series; A plurality of second blocking layers are formed on the first blocking layers to form a plurality of main pixel regions, and the sub pixel regions are located in the main pixel region; an organic light-emitting material layer, formed on the first blocking layer and the second blocking layer, and forming a plurality of light-emitting units in the sub-pixel region; a plurality of second electrode series, formed on the organic light-emitting material layer and extending along the second direction; and a plurality of second wires formed on the transparent substrate and electrically connected in series with the second electrodes; a casing for combining with the transmissive display module; and The optical fingerprint sensing module is arranged below the transmissive display module Wherein, a plurality of reflective layers corresponding to the sub-pixel regions are included between the first wires and the first electrode series.

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

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

In the above preferred embodiment, the material of the first wire and the first electrode series is indium tin oxide, indium zinc oxide, zinc oxide or tin dioxide, and the material of the second electrode series is aluminum or silver.

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

The beneficial effect of the present invention is that the transmissive display module can utilize the setting of the reflective layer to reduce the misjudgment of the optical signal by the optical fingerprint sensing module. On the other hand, by increasing the number of light-emitting units, ie, pixels, per unit area, the resolution of the light signal reflected from the fingerprint can be further improved, and the accuracy of the optical fingerprint sensing module for fingerprint identification can be effectively improved.

The advantages and features of the present invention and the methods for achieving the same will be better understood from the more detailed description with reference to the exemplary embodiments and the accompanying drawings. However, the present invention may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the scope of the invention to those of ordinary skill in the art.

The physiological detection module provided by the present invention is fabricated by the related process of passive organic light emitting diode, and the related process is known to those skilled in the art, and the details of the process will not be repeated here.

First, please refer to FIG. 1 , FIG. 2A and FIG. 2B . 1 is a top view of the transmissive display module provided by the present invention; FIG. 2A is a schematic cross-sectional view of the transmissive display module of FIG. 1 along the line AA'; FIG. 2B is the transmissive display module of FIG. 1 The cross-sectional schematic diagram of the type display module along the BB' line segment. The transmissive display module 10 includes: a light-transmitting substrate 11 , a plurality of first wires 12 , a plurality of first electrode series 13 , a plurality of reflective layers 14 , a first barrier layer 15 , and a plurality of second barrier layers 16 . The organic light-emitting material layer 17 , a plurality of second electrode series 18 and a plurality of second wires 19 .

The first wires 12 are formed on the transparent substrate 11 and extend along the first direction. In this embodiment, the first wires 12 are extended along the X-axis direction; and the first electrode series 13 are formed on the first wires 12, so that the first electrode series 13 are also along the X-axis direction Extended set form. The materials of the first wires 12 and the first electrode series 13 may be: indium tin oxide, indium zinc oxide, zinc oxide or tin dioxide. On the other hand, the plurality of reflection layers 14 are disposed between the first wires 12 and the first electrode series 13 , wherein the material of the reflection layers 14 may be: molybdenum-tantalum alloy, molybdenum or copper. In some possible implementations, a plurality of spaced reflective layers 14 may be formed on the surface of the first wires 12 by vapor deposition, and then the first electrode series 13 may be formed on the first wires 12 .

The first blocking layer 15 covers the first electrode series 13, and forms a plurality of concave sub-pixel regions 151 at positions corresponding to the first electrode series 13, and allows part of the first electrode series 13 is exposed in the sub-pixel region 151, and the setting position of the sub-pixel region 151 corresponds to the lower reflective layer 14. Next, a plurality of second barrier layers 16 in inverted trapezoid shape are selectively formed on the first barrier layer 15 to form a plurality of main pixel regions 161 , and the plurality of sub pixel regions 151 are located in the main pixel region 161 . In this embodiment, each main pixel area 161 includes four sub-pixel areas 151 .

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

The plurality of second electrode strings 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 strings 18 extend along the second direction. In this embodiment, the second electrode series 18 are extended along the Y-axis direction. On the other hand, a plurality of second wires 19 are formed on the transparent substrate 11 and are electrically connected to the second electrode series 18 . In this embodiment, one end of the second electrode series 18 partially covers the second wire 19 and is electrically connected to the second wire 19 .

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 wires 12 and the first electrode series 13 are used as anodes of the transmissive display module 10; and the second wires 19 and the second electrode series 18 are used as cathodes. When a wire 12 and a second wire 19 are provided to the transmissive display module 10, the light emitting units 171 located between the first electrode series 13 and the second electrode series 18 are excited to generate light.

FIG. 3A is a schematic view of the transmissive display module provided by the present invention disposed in an electronic device; FIG. 3B is an enlarged view of the area C in FIG. 3A . The electronic device 1 is a small-volume electronic device with a fingerprint identification function, which includes a transmissive display module 10 , a casing 20 and an optical fingerprint sensing module 30 . The casing 20 can be combined with the transmissive display module 10 to form a closed accommodating space, and can be used to accommodate and configure other electronic components (not shown in the figure) and the optical fingerprint sensing module of the electronic device 1 Group 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 (as shown in FIG. 2A and FIG. 2B ); The second display area 102 does not have the 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 finger 9 on the first display area 101 to perform fingerprint recognition. The electronic device 1 of the present invention can be: an access control display personnel and a fingerprint security device or a safe integrated with a fingerprint security device, but it is not limited to the aforementioned devices.

Please continue to refer to Figure 3B. First of all, it should be noted that FIG. 3B omits and illustrates conventional structures such as packaging elements and cover plates in the transmissive display module. When the user is performing fingerprint identification, the light-emitting unit 171 , namely the pixel, emits a light L1 toward the fingerprint 91 of the finger 9 , and the illuminated fingerprint 91 reflects a light L2 . Then, the light L2 will pass through the gap between the reflective layers 14 and be transmitted to the optical fingerprint sensing module 30 . Due to the setting of the reflective layer 14 , the optical fingerprint sensing module 30 does not receive part of the light L1 emitted downward, which can reduce the misjudgment of the optical signal of the fingerprint 91 by the optical fingerprint sensing module 30 . On the other hand, since each main pixel area 161 includes a plurality of light-emitting units 171 , the resolution of the light signal reflected from the fingerprint 91 can be further improved, and the fingerprint recognition capability of the optical fingerprint sensing module 30 can be effectively improved. Accuracy.

Compared with the prior art, the transmissive display module provided by the present invention utilizes the setting of the reflective layer to effectively reduce the misjudgment of the optical signal by the optical fingerprint sensing module. On the other hand, by increasing the number of light-emitting units, ie pixels, per unit area, the resolution of the light signal reflected from the fingerprint can be further improved, and the accuracy of the fingerprint identification of the optical fingerprint sensing module can be effectively improved; therefore, , the present invention is a creation of great industrial value.

The present invention can be modified in various ways by those who are familiar with the art, but all of them do not deviate from the intended protection of the scope of the appended patent application.

Area C L1, L2 Light 1 Electronic device 10 Transmissive display module 101 The first display area 102 The second display area 11 Translucent substrate 12 First wire 13 The first electrode string 14 Reflective layer 15 The first barrier layer 151 sub-pixel area 16 Second barrier layer 161 Main pixel area 17 Organic light-emitting material layer 171 Light-emitting unit 18 The second electrode string 19 Second lead 20 Shells 30 Optical fingerprint sensor module 9 fingers 91 Fingerprints

Fig. 1: is the top view of the transmissive display module provided by the present invention;

Fig. 2A: is the cross-sectional schematic diagram of the transmissive display module of Fig. 1 along A-A' line segment;

Fig. 2B: is the cross-sectional schematic diagram of the transmissive display module of Fig. 1 along the B-B' line segment;

FIG. 3A is a schematic diagram of the transmissive display module provided by the present invention being installed in an electronic device; and

FIG. 3B is an enlarged view of area C in FIG. 3A .

L1, L2 Light 10 Transmissive display module 11 Translucent substrate 14 Reflective layer 15 The first barrier layer 151 sub-pixel area 16 Second barrier layer 161 Main pixel area 17 Organic light-emitting material layer 171 Light-emitting unit 30 Optical fingerprint sensor module 9 fingers 91 Fingerprints

Claims (9)

A penetrating display module, comprising: a light-transmitting substrate; A plurality of first wires are formed on the transparent substrate and extend along a first direction; A plurality of first electrode series are formed on the first wires; a first blocking layer covering the first electrode series and forming a plurality of sub-pixel regions at positions corresponding to the first electrode series; A plurality of second blocking layers are formed on the first blocking layer to form a plurality of main pixel regions, and the sub pixel regions are located in the main pixel regions; an organic light-emitting material layer formed on the first blocking layer and the second blocking layers, and forming a plurality of light-emitting units in the sub-pixel regions; a plurality of second electrode series, formed on the organic light-emitting material layer and extending along a second direction; and a plurality of second wires are formed on the transparent substrate and are electrically connected in series with the second electrodes; Wherein, a plurality of reflective layers corresponding to the sub-pixel regions are included between the first wires and the first electrode series. The transmissive display module according to claim 1, wherein the transmissive display module further comprises a first display area and a second display area, and the first display area has the reflective layers , the second display area does not have the reflective layers. The transmissive display module according to claim 1, wherein the first wires and the first electrode series are made of indium tin oxide, indium zinc oxide, zinc oxide or tin dioxide, The material of the second electrode series is aluminum or silver. The transmissive display module according to claim 1, wherein the plurality of reflective layers are made of molybdenum-tantalum alloy, molybdenum or copper. An electronic device comprising: A transmissive display module, including: a light-transmitting substrate; A plurality of first wires are formed on the transparent substrate and extend along a first direction; A plurality of first electrode series are formed on the first wires; a first blocking layer covering the first electrode series and forming a plurality of sub-pixel regions at positions corresponding to the first electrode series; A plurality of second blocking layers are formed on the first blocking layer to form a plurality of main pixel regions, and the sub pixel regions are located in the main pixel regions; an organic light-emitting material layer formed on the first blocking layer and the second blocking layers, and forming a plurality of light-emitting units in the sub-pixel regions; a plurality of second electrode series, formed on the organic light-emitting material layer and extending along a second direction; and a plurality of second wires are formed on the transparent substrate and are electrically connected in series with the second electrodes; a casing for combining 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 wires and the first electrode series. The electronic device according to claim 5, wherein the transmissive display module further comprises a first display area and a second display area, and the first display area has the reflective layers, the second display area The display area does not have these reflective layers. The electronic device as described in claim 6, wherein the optical fingerprint sensing module is disposed below the first display area. The electronic device according to claim 5, wherein the first wires and the first electrode series are made of indium tin oxide, indium zinc oxide, zinc oxide or tin dioxide, and the second The material of the electrode series is: aluminum or silver. The electronic device according to item 5 of the claimed scope, wherein the materials of the reflective layers are: molybdenum-tantalum alloy, molybdenum or copper.

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