WO2018209672A1 - 显示模组 - Google Patents
显示模组 Download PDFInfo
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- WO2018209672A1 WO2018209672A1 PCT/CN2017/085019 CN2017085019W WO2018209672A1 WO 2018209672 A1 WO2018209672 A1 WO 2018209672A1 CN 2017085019 W CN2017085019 W CN 2017085019W WO 2018209672 A1 WO2018209672 A1 WO 2018209672A1
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- light
- protective layer
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- backlight
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
Definitions
- the present invention relates to the field of optical fingerprint recognition, and in particular, to a display module.
- the fingerprint imaging recognition technology is a technique of acquiring a fingerprint image of a human body through a fingerprint sensor and then comparing it with existing fingerprint imaging information in the system to determine whether it is correct or not, thereby realizing the identity recognition technology. Due to its ease of use and the uniqueness of human fingerprints, fingerprint recognition technology has been widely used in various fields. For example, the public security bureau, customs and other security inspection areas, building access control systems, and consumer goods such as personal computers and mobile phones.
- Fingerprint imaging recognition technology can be realized by various techniques such as optical imaging, capacitive imaging, and ultrasonic imaging. Relatively speaking, optical fingerprint imaging technology has relatively good imaging effect and relatively low equipment cost.
- a fingerprint recognition function has been integrated in a display module, but it is usually a capacitive fingerprint recognition principle.
- a fingerprint recognition function has been integrated in a display module, but it is usually a capacitive fingerprint recognition principle.
- a capacitive fingerprint recognition principle For more information about the integrated fingerprint recognition function in the display module, refer to the Chinese invention patent application with the publication number CN106024833A.
- the display module structure of the existing integrated fingerprint recognition function needs to be improved, and the performance needs to be improved.
- the problem solved by the present invention is to provide a display module to better integrate the fingerprint recognition function in the display module, thereby obtaining a clear fingerprint image while displaying.
- the present invention provides a display module including: a protective layer; a self-luminous display panel, the self-luminous display panel is located under the protective layer; at least part of the self-luminous display panel has an optical fingerprint
- the identification structure can realize an optical fingerprint recognition function; the display module further includes: a dot backlight, wherein the point backlight is located Below the protective layer and on the side of the self-luminous display panel, the light emitted by the point-like backlight enters the protective layer at an obliquely upward angle.
- the self-luminous display panel comprises a first substrate, a second substrate, and a self-luminous circuit layer between the first substrate and the second substrate; the first substrate is a transparent substrate, and the first substrate is located Above the second substrate; the self-illuminating circuit layer includes a display area, the display area includes a plurality of display pixel units; the display area includes one or more optical fingerprint sensing areas; and the optical fingerprint sensing a region, wherein each of the k display pixel units has at least one optical fingerprint sensing element, m and n are any integers of 1 or more, and k is 1 to m. Any integer of ⁇ n.
- the optical fingerprint sensing component is located on an upper surface of the second substrate or on a lower surface of the first substrate.
- the self-luminous display panel comprises a first substrate, a second substrate, and a self-luminous circuit layer between the first substrate and the second substrate; the first substrate is a transparent substrate, and the first substrate is located Above the second substrate; the self-illuminating circuit layer includes a display area, the display area includes a plurality of display pixel units; the first substrate upper surface includes one or more optical fingerprints located above the display area a measurement area; the optical fingerprint sensing area has an optical fingerprint sensing element.
- each m ⁇ n of the display pixel unit has at least one optical fingerprint sensing element above each of the display pixel units, m And n is an integer of 1 or more, and k is an integer of 1 to m ⁇ n.
- the optical fingerprint sensing component is located obliquely above the display pixel unit.
- a light transmissive glue is disposed between the point backlight and the protective layer, and the light transmissive glue covers a light emitting surface of the point backlight and a portion of the lower surface of the protective layer, wherein the point The light emitted by the backlight enters the light-transmitting glue from the light-emitting surface of the dot-shaped backlight.
- the protective layer is then introduced from the light transmissive glue.
- At least a portion of the lower surface of the light transmissive glue has a light absorbing layer.
- a thickening layer is disposed between the self-luminous display panel and the protective layer, and a lower surface of the protective layer has a light shielding layer, and the light shielding layer is adjacent to the transparent glue.
- the light-emitting surface of the dot-shaped backlight has a condensing lens in front of the light-collecting lens, and the condensing lens can reduce a divergence angle of the light of the point-shaped backlight into the protective layer, the dot-shaped backlight The light enters the collecting lens first and then enters the protective layer.
- the area of the lower surface of the protective layer opposite to the point backlight further includes an anti-reflection film capable of increasing the proportion of the light of the point backlight into the protective layer.
- a light guiding prism is disposed in front of the light emitting surface of the dot backlight, and light emitted by the point backlight enters the light guiding prism from a light emitting surface of the dot backlight, and then A light prism enters the protective layer.
- the light incident surface of the light guiding prism is a curved surface facing the point backlight
- the upper surface of the light guiding prism is a plane parallel to the lower surface of the protective layer
- the light guiding prism The lower surface is a slope connecting the upper surface and the light incident surface.
- a thickening layer is disposed between the self-luminous display panel and the protective layer, and a light incident surface of the light guiding prism is a slope facing the point backlight, and an upper surface of the light guiding prism is a plane parallel to the lower surface of the protective layer, a side surface of the light guiding prism is a plane parallel to a side surface of the thickening layer, and an upper surface of the light guiding prism is pasted with a lower surface of the protective layer.
- the vertical side of the light guiding prism is attached to the side of the thickened layer.
- a thickening layer is disposed between the self-luminous display panel and the protective layer, and a light incident surface of the light guiding prism is a curved surface facing the point backlight, and the upper surface of the light guiding prism a plane parallel to the lower surface of the protective layer, a side surface of the light guiding prism is a plane parallel to a side surface of the thickening layer, and an upper surface of the light guiding prism is pasted with a lower surface of the protective layer, The side surface of the light guiding prism is adhered to the side surface of the thickening layer.
- the lower surface of the light guiding prism has a light absorbing layer.
- the lower surface of the protective layer has a light shielding layer, and the light shielding layer is adjacent to the light guiding prism.
- a thickening layer is disposed between the self-luminous display panel and the protective layer.
- a region of the lower surface of the protective layer opposite to the point backlight is covered by a light shielding layer, and light emitted by the dot backlight enters the thickening layer from a side of the thickening layer, and then The protective layer is introduced from the thickened layer.
- the lower surface of the protective layer has a light shielding layer, and a side surface of the thickened layer opposite to the dot backlight is a slope facing the point backlight, and the top of the slope is adjacent to the light shielding layer.
- Light from the point-like backlight enters the thickened layer from the slope of the thickened layer and enters the protective layer from the thickened layer.
- the dot backlight is an LED lamp; or the dot backlight is two or more LED lamps.
- the dot backlight is two or more LED lamps, and the two or more LED lamps are evenly distributed on the same side of the self-luminous display panel.
- the self-luminous display panel includes two or more partial optical sensing regions, and one of the LED lamps corresponds to one of the partial optical sensing regions; the display module further includes a touch structure, and the touch structure
- the method includes two or more partial touch regions, and one of the partial optical sensing regions corresponds to one of the partial touch regions.
- the self-luminous display panel includes three or more local optical sensing regions, the number of the LED lamps is less than the number of the local optical sensing regions; the display module further includes a touch structure, the touch The control structure includes three or more partial touch regions, and one of the partial optical sensing regions corresponds to one of the partial touch regions.
- each of the LED lamps corresponds to a plurality of adjacent partial optical sensing regions; and the partial optical sensing regions corresponding to the two adjacent LED lamps are identical.
- the protective layer and the self-luminous display panel are provided from top to bottom.
- at least part of the self-luminous display panel has an optical fingerprint recognition structure, and an optical fingerprint recognition function can be implemented.
- the display module further has a point backlight located under the protective layer and located on the side of the self-luminous display panel, and the light emitted by the point backlight enters the protective layer at an obliquely upward angle. In this structure, the light emitted by the dot backlight does not need to pass through the self-luminous display panel, and enters the protective layer.
- the light undergoes corresponding optical phenomena such as reflection and refraction, and then returns from The light-emitting display panel is received by the optical fingerprint recognition structure of the self-luminous display panel, so that the self-luminous display panel obtains the corresponding fingerprint image, and the whole process uses the display module to realize the collection of the finger fingerprint image, and the collected fingerprint The image is clear, and finally the display module integrates good fingerprint recognition.
- the display module of the structure can stop displaying work or display a specific picture when the display area of the self-luminous display panel having the optical fingerprint identification structure is controlled, and the other areas can display the fingerprint image.
- the information associated with the work is collected, so that the display function and the fingerprint recognition function can be combined to achieve a better user experience.
- FIG. 1 is a schematic cross-sectional view of a display module according to an embodiment of the present invention.
- FIG. 2 is a top plan view of a self-luminous display panel in the display module of FIG. 1;
- FIG. 3 is a schematic cross-sectional view of a display module according to another embodiment of the present invention.
- FIG. 4 is a schematic cross-sectional view of a display module according to another embodiment of the present invention.
- FIG. 5 is a schematic cross-sectional view of a display module according to another embodiment of the present invention.
- FIG. 6 is a schematic cross-sectional view of a display module according to another embodiment of the present invention.
- FIG. 7 is a schematic cross-sectional view of a display module according to another embodiment of the present invention.
- FIG. 8 is a schematic cross-sectional view of a display module according to another embodiment of the present invention.
- FIG. 9 is a schematic cross-sectional view of a display module according to another embodiment of the present invention.
- FIG. 10 is a schematic cross-sectional view of a display module according to another embodiment of the present invention.
- FIG. 11 is a schematic cross-sectional view of a display module according to another embodiment of the present invention.
- FIG. 12 is a schematic bottom view of a display module according to another embodiment of the present invention.
- FIG. 13 is a schematic bottom view of a display module according to another embodiment of the present invention.
- the prior art mostly uses capacitive fingerprint imaging technology to integrate with a display module of a self-luminous display panel.
- the present invention provides a display module in which an optical fingerprint sensor and a self-luminous display panel are integrated (specifically, an optical fingerprint sensor is integrated in a self-luminous display panel), thereby realizing display while achieving fingerprint
- the recognition function and the corresponding structural design enable the display module to collect clear fingerprint images, and the display function and the fingerprint recognition function cooperate with each other, so that the user has a better use experience for the display module.
- the upper and lower relationships in other contents are defined by placing the display module under the eyes of the user and positioning the protective layer at the top. That is to say, if one structure is located above the other structure, it means that when the display module is placed under the eyes of the user and the protective layer is at the top, the structure is closer to the user's eyes than the other structure. .
- FIG. 1 is a schematic cross-sectional view of a display module
- FIG. 2 is a schematic top view of a self-luminous display panel in a display module.
- FIG. 1 shows that the display module includes a protective layer 110, a self-luminous display panel 120, and a dot backlight 130.
- the self-luminous display panel 120 is located below the protective layer 110. At least a part of the self-luminous display panel 120 has an optical fingerprint recognition structure, and an optical fingerprint recognition function can be realized.
- the point backlight 130 is located under the protective layer 110 and is located on the side of the self-luminous display panel 120. The light emitted by the point backlight 130 enters the protective layer 110 at an obliquely upward angle, as shown by the oblique upward arrow in FIG. Show.
- the oblique downward arrow in Figure 1 indicates the corresponding reflected light.
- the refraction of light between different optical media structures is neglected in each of the various embodiments, as described herein.
- the self-luminous display panel 120 includes a first substrate 121, a second substrate 122, and a self-luminous circuit layer 123 between the first substrate 121 and the second substrate 122.
- the first substrate 121 is a light transmissive substrate, and the first substrate 121 is located above the second substrate 122.
- the self-luminous circuit layer 123 includes a display area (not all of which is shown), and the display area includes a plurality of display pixel units 1231.
- a corresponding optical fingerprint recognition structure is disposed in the display area of the self-luminous display panel 120, so that the self-luminous display panel 120 can implement the optical fingerprint recognition function.
- FIG. 2 shows a top view structure of the self-luminous display panel 120.
- the self-luminous display panel 120 is shown by a large solid rectangle in FIG. 2 , and the display area of the self-luminous display panel 120 must be positioned on the large solid line. Inside the rectangle.
- the display area includes an optical fingerprint sensing area 120a, and the optical fingerprint sensing area 120a is surrounded by a large dotted frame in FIG. 2 to be highlighted.
- the area of the optical fingerprint sensing area 120a is smaller than the area of the display area, that is, the optical fingerprint sensing area 120a is only a part of the display area.
- the area of the optical fingerprint sensing area and the area of the display area may be equal, that is, the entire area of the display area is also the optical fingerprint sense. The area where the survey area is located.
- the display area may also include a plurality of (two or more) optical fingerprint sensing areas. At this time, each optical fingerprint sensing area is part of the display area, and all The total of the optical fingerprint sensing regions may be the display area or may be smaller than the display area.
- the display area includes a plurality of display pixel units 1231 , and the top view shape of the area of the display pixel unit 1231 is surrounded by a small dotted frame in FIG. 2 , and the display pixel unit 1231 is generally arranged in a row (array). . Therefore, in the optical fingerprint sensing area 120a, a plurality of display pixel units 1231 arranged in a row and column are also included. It should be noted that only the display pixel unit 1231 in the optical fingerprint sensing area 120a is shown in FIG. 2, and the display pixel unit 1231 not located in the optical fingerprint sensing area 120a is not shown.
- the display pixel unit may also be arranged in a staggered row (column). At this time, microscopically, every three display pixel units have an acute triangle (for example, an acute isosceles triangle, or the like). The three vertices of the edge triangle are arranged. In other embodiments, the display pixel unit may also be in other arrangements.
- two display pixel units 1231 each have one optical fingerprint sensing element 1232 per 2 ⁇ 2 display pixel units 1231, and a small solid rectangle A is used in FIG. A set of 2 x 2 display pixel units 1231 is selected to enhance display.
- each of the optical fingerprint sensing elements 1232 is specifically formed in the first row of 2 ⁇ 2 display pixel units 1231, that is, the upper two.
- the optical fingerprint sensing element 1232 is a photoelectric conversion device, and may be, for example, a photodiode or the like.
- the schematic structure of the self-luminous display panel 120 in Fig. 1 is a schematic structure of the self-luminous display panel 120 of Fig. 2 taken along the line B-B'.
- the B-B' dot-dotted line passes through the optical fingerprint sensing elements 1232 and the display pixel unit 1231 in which they are located. Therefore, it is seen in FIG. 1 that each of the display pixel units 1231 has an optical fingerprint sensing element 1232.
- only half of the display pixel units 1231 in the optical fingerprint sensing area 120a have optical fingerprint sensing elements 1232.
- each display pixel unit 1231 may be a single pixel structure, that is, the display pixel unit 1231 does not include a sub-pixel.
- the optical fingerprint sensing element 1232 can be fabricated at an appropriate position of the display pixel unit 1231.
- the display pixel unit may also include a plurality of sub-pixels (for example, three sub-pixels or four sub-pixels).
- the optical fingerprint sensing component may be fabricated in an area other than each sub-pixel, or may be fabricated in a certain sub-pixel. Inside.
- each of the m display pixel units has at least one optical fingerprint sensing element, and m and n are any integers of 1 or more per m ⁇ n display pixel units. , k is any integer from 1 to m ⁇ n.
- the embodiment shown in Fig. 2 is a case where both m and n are equal to 2 and k is equal to 2.
- n are any one of 1 or more. Integer.
- a case where "m and n are 2 and k is 1" may be selected.
- each of the k display pixel units has at least one optical fingerprint sensing element per m ⁇ n of the display pixel units in the optical fingerprint sensing area, It may be further provided that at least one of m and n is greater than 1, and k is less than m ⁇ n.
- each display pixel unit there may be one optical fingerprint sensing element in each display pixel unit. In other embodiments, it may also be that there are multiple (eg, two) optical fingerprint sensing elements in each display pixel unit. For example, each of the display pixel units of the odd-numbered rows has four optical fingerprint sensing elements, and each of the even-numbered rows has two optical fingerprint sensing elements.
- each of the display pixel units may include three sub-pixels, and one of the display pixel units has one optical fingerprint sensing element per 1 ⁇ 2 display pixel units. In other embodiments, each of the display pixel units may include three sub-pixels, and is located in each adjacent two display pixel units of the odd-numbered rows, wherein one display pixel unit has two optical fingerprint sensing elements, and One display pixel unit has one optical fingerprint sensing element.
- adjacent optical fingerprint sensing elements 1232 In the optical fingerprint sensing area 120a, adjacent optical fingerprint sensing elements 1232 The distance between them may be from 30 ⁇ m to 100 ⁇ m. Since the grain spacing of human fingerprints is generally around 200 ⁇ m, the optical fingerprint sensing component 1232 that is too dense has no practical benefit. There are two important requirements when collecting fingerprint images: one is the resolution of the acquired image, that is, the distance between adjacent optical fingerprint sensing elements 1232 in the optical fingerprint sensing area 120a cannot be too large; the other is acquisition The area should be large enough to capture a certain area of fingerprint image to obtain enough fingerprint information. Therefore, the distance between adjacent optical fingerprint sensing elements 1232 is 30 ⁇ m to 100 ⁇ m. If the distance between them is too large, the fingerprint image resolution is insufficient and cannot be used for fingerprint recognition.
- the processing time becomes longer.
- the optical fingerprint sensing component 1232 is located on the upper surface of the second substrate 122 , that is, the optical fingerprint sensing component 1232 is formed on the upper surface of the second substrate 122 in this embodiment.
- the self-luminous display panel 120 may also include a sealing structure (not labeled).
- the sealing structure is also located between the first substrate 121 and the second substrate 122.
- the sealing structure together with the first substrate 121 and the second substrate 122, seals the self-luminous circuit layer 123 between the first substrate 121 and the second substrate 122.
- the first substrate 121 is a light-transmitting substrate, and thus the specific material thereof may be inorganic glass or organic glass, or may be other plastic products other than organic glass.
- the material selection range of the second substrate 122 can be larger, and a light transmissive material or a non-light transmissive material can be selected.
- the self-luminous circuit layer 123 in the self-luminous display panel 120 includes a plurality of display pixel units 1231 . Similar to FIG. 2, the area where the pixel unit 1231 is located and the adjacent relationship of the display pixel units 1231 are indicated by a broken line frame in FIG. 1. Meanwhile, in the cross section of FIG. 1, each display pixel unit 1231 has an optical Fingerprint sensing element 1232. However, it should be understood that the self-luminous display panel 120 includes display pixel unit 1231 that does not include an optical fingerprint sensing element.
- the dotted line frame in FIG. 1 includes a portion of the first substrate 121 and the second substrate 122, but this is only for convenience of display, and the area where the display pixel unit 1231 is located generally does not include the first substrate 121 and the second substrate 122.
- the cross-sectional structures of the various other embodiments are shown in the same dashed box format and are described herein.
- the self-luminous display panel 120 may be an OLED display panel.
- the display pixel unit 1231 of the self-luminous circuit layer 123 may include an anode layer, a hole injection layer (HIL), an emission layer (EML), and an electron injection layer.
- the structure (EIL) and the cathode layer may further have a hole transport layer (HTL) and an electron transport layer (ETL), and may also include a TFT for driving the OLED, a driving metal line, and a storage capacitor.
- the luminescence principle of the OLED display panel is: under a certain voltage driving, electrons and holes migrate from the cathode layer and the anode layer to the luminescent layer, respectively, and meet in the luminescent layer to form excitons and excite the luminescent molecules, and the luminescent molecules undergo radiation. Relaxation produces visible light (or other light).
- the dot backlight 130 can be an LED light.
- the light of the LED lamp may be near ultraviolet light, purple light, blue light, green light, yellow light, red light, near infrared light or white light.
- the dot backlight 130 may also be two or more LED lamps, and the LED lamps are evenly distributed on different sides of the self-luminous display panel 120.
- the protective layer 110 may be a flat substrate or other shape having a flat portion.
- the material of the protective layer 110 may be a transparent material, and the specific material may be inorganic glass or organic glass, or may be other plastic products other than organic glass.
- the self-luminous display panel 120 may be directly under the protective layer 110 and may be directly laminated on the lower surface of the protective layer 110, that is, the two are directly in contact and directly laminated. In other cases, the self-luminous display panel 120 may also be adhered to the lower surface of the protective layer 110 by optical glue.
- the optical adhesive can be used to avoid the presence of air between the protective layer 110 and the self-luminous display panel 120, thereby further improving the optical performance of the module.
- the dot backlight 130 and the side of the self-luminous display panel 120 may have a space (not labeled). By adjusting the size of the interval, the light of the dot backlight 130 can be adjusted to the lower surface of the protective layer 110. Angle of incidence.
- the dot backlight may also be placed in direct contact with the side of the self-luminous display panel without spacing.
- the dot backlight 130 and the lower surface of the protective layer 110 may have a space (not labeled). By adjusting the size of the interval, the light of the dot backlight 130 can also be adjusted to the lower surface of the protective layer 110. Incidence angle.
- the point backlight may also be placed in direct contact with the lower surface of the protective layer.
- the light emitted by the dot backlight 130 enters the protective layer 110 obliquely upward. After reaching the upper surface of the protective layer 110, the light is reflected and refracted at the interface formed by the finger fingerprint and the upper surface of the protective layer 110. a phenomenon that generates a corresponding reflected light; the reflected light returns obliquely downward to the protective layer 110, passes through the protective layer 110 and reaches the self-luminous display panel 120, and is received by the optical fingerprint sensing element 1232 in the display pixel unit 1231, thereby enabling The fingerprint image acquisition is realized, and the fingerprint recognition function is realized.
- the dot backlight 130 is disposed under the protective layer 110 and disposed on the side of the self-luminous display panel 120.
- the light emitted by the point backlight 130 is further disposed at an obliquely upward angle to enter the protective layer 110.
- the light emitted by the point backlight 130 does not have to be
- the self-luminous display panel 120 enters the protective layer 110, it is used for the collection of the finger fingerprint image, that is, the acquisition of the finger fingerprint image, the utilization of the corresponding light is improved, and the final optical fingerprint sensing component 1232 can be received.
- the semaphores and the captured fingerprint images are clear, so the display module integrates good fingerprint recognition.
- the entire display module has a simple structure and a simple manufacturing process.
- the dot backlight 130 can make the light light shift in the same direction, and the light offset from the point backlight 130 is similar, and the light angle difference is small, avoiding The mutual interference and mutual influence between the light rays, therefore, the light entering the protective layer 110 of the dot-shaped backlight 130 finally enters the self-luminous display panel 120 substantially at a similar angle, so that the fingerprint image acquired is less distorted, and the fingerprint is small.
- the image is more clear (that is, a clear fingerprint image can be obtained), the quality of the fingerprint image collected by the display module is improved, and the fingerprint recognition performance of the module is improved.
- the fingerprint image can be collected in the display area of the display module by using the corresponding use method, thereby reducing the appearance size of the electronic product to which the display panel is applied, and improving the electronic product.
- the proportion of screens increases the aesthetic appearance of electronic products (for example, it can increase the screen ratio of mobile phone products and improve the appearance of mobile phone products).
- the optical fingerprint sensing area 120a in the self-luminous display panel 120 is defined as a first display area, and the display area of other parts is defined as a second display area; when the optical fingerprint sensing element 1232 performs fingerprint image collection work And controlling the first display area to stop displaying work or displaying a specific picture.
- the optical fingerprint sensing component 1232 performs a fingerprint image capturing operation
- the usage method may further develop an application scenario of the fingerprint recognition function. For example, before the optical fingerprint sensing component 1232 is not working, the first display area is displayed with a corresponding display icon, and the user is instructed to put a finger into the icon. . After the user puts the finger into the area where the icon is displayed, the existing display panel itself or the external touch function can be used to sense that the user has placed the finger in the first display area, thereby controlling the optical fingerprint sensing component 1232. Entering the working state, at this time, the fingerprint image of pressing the fingerprint is collected by the optical fingerprint sensing component 1232 below the first display area, and the fingerprint image collecting function is completed, and can be further applied to identify the existing fingerprint image stored internally. Further use for encryption/unlocking and other functions.
- Another embodiment of the present invention provides another display module. Please refer to FIG. 3.
- the display module includes a protective layer 210, a self-luminous display panel 220, and a dot backlight 230.
- the self-luminous display panel 220 is located below the protective layer 210. At least a part of the self-luminous display panel 220 has an optical fingerprint recognition structure, and an optical fingerprint recognition function can be realized.
- the dot backlight 230 is located under the protective layer 210, and the dot backlight 230 is located on the side of the self-luminous display panel 220, and the light emitted by the dot backlight 230 enters at an obliquely upward angle.
- the protective layer 210 is as shown by the oblique upward arrow in FIG.
- the oblique downward arrow in Figure 3 indicates the corresponding reflected light.
- the self-luminous display panel 220 includes a first substrate 221, a second substrate 222, and a self-luminous circuit layer 223 between the first substrate 221 and the second substrate 222.
- the first substrate 221 is a transparent substrate, the first substrate 221 is located above the second substrate 222;
- the self-lighting circuit layer 223 includes a display area (not all shown), and the display area includes a plurality of display pixel units, as shown in FIG. Several of the display pixel units 2231 are shown.
- the display area can include one or more optical fingerprint sensing areas.
- each of the m display pixel units has at least one optical fingerprint sensing element, and m and n are any integers of 1 or more, k is Any integer from 1 to m ⁇ n.
- Each display pixel unit 2231 is shown in FIG. 3 to have an optical fingerprint sensing element 2232.
- the self-luminous display panel 220 can implement the optical fingerprint recognition function, and the corresponding content of the foregoing embodiment can be referred to, because the display area includes a corresponding optical fingerprint sensing area, and the optical fingerprint sensing area has a structure such as an optical fingerprint sensing element. .
- the optical fingerprint sensing component 2232 is located on the lower surface of the first substrate 121. That is, the optical fingerprint sensing component 2232 is formed on the lower surface of the first substrate 121 in this embodiment.
- a light-transmitting adhesive 240 is disposed between the dot backlight 230 and the protective layer 210.
- the light-transmitting adhesive 240 covers the light-emitting surface of the dot-shaped backlight 230 and a portion of the lower surface of the protective layer 210.
- the dot-shaped backlight The light emitted by the 230 enters the light transmitting paste 240 from the light emitting surface of the dot backlight, and then enters the protective layer 210 from the light transmitting adhesive 240.
- the light emitted by the point-like backlight usually needs to pass through the air environment and then enter the protective layer. At this time, the light will reflect and the like, causing the light entering the protective layer to be reduced, and the light enters the protective layer from the air. There will be a more obvious refraction phenomenon, and the refraction will reduce the illumination area of the incident light. (Refer to FIG. 1 and FIG. 3, the illumination area of the light on the upper surface of the protective layer in FIG. 1 is obviously smaller than that on the upper surface of the protective layer in FIG. Upper irradiation area).
- the light-transmitting glue 240 By adding the light-transmitting glue 240, the light does not need to pass through the air, and the amount of incident light is increased.
- the refractive index of the transparent adhesive 240 is generally close to the refractive index of the protective layer 210, so that the incident light can be increased on the upper surface of the protective layer. Irradiation area Depth), thereby increasing the fingerprint imaging area.
- the lower surface of the transparent adhesive 240 has a light absorbing layer 250.
- the light-transmitting adhesive 240 usually has a portion directly covering the dot-shaped backlight 230 (the covered surface generally includes the light-emitting surface of the dot-shaped backlight 230), and the surface of the light-transmitting adhesive 240 under the point-like backlight 230 covered by the light-transmitting adhesive 240 belongs to The lower surface of the light transmissive glue 240.
- the dot backlight 230 is usually an LED lamp, and the angle of the exiting light of the LED lamp is large, and a part of the light is obliquely irradiated downward to the lower surface of the light transmitting paste 240.
- This portion of the light is reflected and scattered on the lower surface of the light transmissive glue 240, regenerating the secondary light entering the protective layer 210 obliquely upward.
- these secondary rays are already stray light. If there is an intersection with the light that directly enters the protective layer 210 obliquely upward, the fingerprint image will be misaligned, which will cause the fingerprint image to be disturbed and blurred. Therefore, by adding the light absorbing layer 250 to the lower surface of the light-transmitting paste 240, the stray light is eliminated, thereby further improving the quality of the fingerprint image.
- the light absorbing layer on the lower surface of the light transmissive gel may be omitted if the fingerprint image has been met.
- Another embodiment of the present invention provides another display module. Please refer to FIG. 4.
- the display module includes a protective layer 310, a self-luminous display panel 320, and a dot backlight 330.
- the self-luminous display panel 320 is located below the protective layer 310. At least a part of the self-luminous display panel 320 has an optical fingerprint recognition structure, and an optical fingerprint recognition function can be realized.
- the point backlight 330 is located below the protective layer 310, and the point backlight 330 is located on the side of the self-luminous display panel 320.
- the light emitted by the point backlight 330 enters the protective layer 310 at an obliquely upward angle, as shown in FIG.
- the arrow in the middle is upwards.
- the oblique downward arrow in Figure 4 indicates the corresponding reflected light.
- the self-luminous display panel includes a first substrate 321, a second substrate 322, and a self-luminous circuit layer 323 between the first substrate 321 and the second substrate 322.
- the first substrate 321 is a light transmissive substrate, and the first substrate 321 is located above the second substrate 322.
- the self-illuminating circuit layer 323 includes a display area including a plurality of display pixel units, as shown in FIG. The pixel unit 3231 is displayed.
- the optical fingerprint sensing element is disposed on the upper surface of the first substrate 321 in this embodiment.
- the upper surface of the first substrate 321 includes one or more optical fingerprint sensing regions located above the display area.
- the optical fingerprint sensing area has an optical fingerprint sensing element.
- at least one optical fingerprint sensing element is provided above each of the k display pixel units 3231, and m and n are any integers of 1 or more.
- k is any integer from 1 to m ⁇ n.
- each of the display pixel units 3231 has an optical fingerprint sensing element 3232 thereon.
- the self-luminous display panel 320 can implement an optical fingerprint recognition function, and reference may be made to the foregoing embodiment. Corresponding content.
- each of the optical fingerprint sensing elements 3232 is located obliquely above the display pixel unit 3231. Thereby, the optical fingerprint sensing element 3232 is prevented from obscuring the effective display area (opening area) of each display pixel unit 3231.
- the position of the optical fingerprint sensing element 3232 can be more selected even if the optical fingerprint sensing element 3232 is located directly above the open area. The normal display of the display pixel unit 3231 is also substantially not affected.
- the layout design of the optical fingerprint sensing region and the optical fingerprint sensing component 3232 may have other more in other embodiments.
- the form of the present invention is not limited.
- the light-emitting surface of the dot backlight 330 has a collecting lens 340 on the front side thereof, and the collecting lens 340 can reduce the divergence angle of the light of the point backlight 330 into the protective layer 310, and the light of the dot backlight 330.
- the condensing lens 340 is first entered and then enters the protective layer 310. At this time, the condensing lens 340 achieves the function of improving the light utilization efficiency, and the effect of improving the image signal strength is achieved. If the concentrating lens 340 is used, the corresponding low-power point backlight 330 can be used, and the concentrating lens 340 can reduce the power consumption of the module. use.
- a region of the lower surface of the protective layer 310 opposite to the point backlight 330 (this portion, that is, a region of the lower surface of the protective layer 310 for receiving incident light) further includes an anti-reflection film 350 and an anti-reflection film 350. It is possible to increase the proportion of the light of the point backlight entering the protective layer 310. Increasing the proportion of light entering the protective layer 310 can further improve the quality of the fingerprint image and further improve the fingerprint image recognition capability of the display module.
- Another embodiment of the present invention provides another display module. Please refer to FIG. 5.
- the display module includes a protective layer 410, a self-luminous display panel 420, and a dot backlight 430.
- the self-luminous display panel 420 is located below the protective layer 410.
- the self-luminous display panel 420 has an optical fingerprint recognition structure capable of realizing an optical fingerprint recognition function.
- the point backlight 430 is located under the protective layer 410, and the point backlight 430 is located on the side of the self-luminous display panel 420.
- the light emitted by the point backlight 430 enters the protective layer 410 at an obliquely upward angle, as shown in FIG.
- the arrow in the middle is upwards.
- the oblique downward arrow in Figure 5 indicates the corresponding reflected light.
- the self-luminous display panel 420 includes a first substrate 421, a second substrate 422, and a self-luminous circuit layer 423 between the first substrate 421 and the second substrate 422.
- the first substrate 421 is a transparent substrate
- the first substrate 421 is located above the second substrate 422
- the self-illuminating circuit layer 423 includes a display area (not all shown), and the display area includes a plurality of display pixel units, as shown in FIG.
- the display area can include one or more optical fingerprint sensing areas. In the optical fingerprint sensing area, each of the m display pixel units has at least one optical fingerprint sensing element, and m and n are any integers of 1 or more, k is Any integer from 1 to m ⁇ n.
- Each display pixel unit 4231 is shown in FIG. 5 to have an optical fingerprint sensing element 4232. Since the display area includes a corresponding optical fingerprint sensing area, and the optical fingerprint sensing area has a structure such as an optical fingerprint sensing element, the self-luminous display panel 420 can implement an optical fingerprint recognition function, and reference may be made to the corresponding content of the foregoing embodiment. .
- the light-emitting surface of the dot-shaped backlight 430 has a light-guiding prism 440.
- the light emitted by the dot-shaped backlight enters the light-guiding prism 440 from the light-emitting surface of the dot-shaped backlight 430, and then enters the light-guiding prism 440.
- Protective layer 410 is
- the light guiding prism 440 is a right-angled triangle in the cross section shown in FIG. 5 (the three-dimensional shape of which is a triangular prism shape, and has an end surface not shown in FIG. 5).
- One of the triangles corresponds to the vertical side of the light guiding prism 440, and the vertical side serves as the light incident surface of the light guiding prism 440, and the light enters the light guiding prism 440 from the light incident surface.
- the oblique side of the triangle corresponds to the lower surface of the light guiding prism 440, which is an oblique lower surface in this embodiment.
- the light guiding prism may also have other shapes.
- An optical glue (not shown) may be attached between the light guiding prism 440 and the protective layer 410.
- the function of the light guiding prism 440 is similar to that of the light transmitting glue 240 shown in FIG. 3, that is, reducing the refraction of the light emitted by the point backlight 430, so that the upper surface area of the protective layer which the point backlight 430 can illuminate is larger, that is, The area where the finger fingerprint image is obtained is larger.
- the lower surface of the light guiding prism 440 has a light absorbing layer 450.
- the function of the light absorbing layer 450 is the same as that of the light absorbing layer 250 of FIG. 3, that is, the corresponding stray light can be eliminated.
- the light absorbing layer on the lower surface of the light guiding prism may be omitted if the fingerprint image has been met.
- Another embodiment of the present invention provides another display module. Please refer to FIG. 6.
- the display module includes a protective layer 510, a self-luminous display panel 520, and a dot backlight 530.
- the self-luminous display panel 520 is located below the protective layer 510.
- the self-luminous display panel 520 has an optical fingerprint recognition structure and can realize an optical fingerprint recognition function.
- the dot backlight 530 is located under the protective layer 510, and the dot backlight 530 is located on the side of the self-luminous display panel 520.
- the light emitted by the dot backlight 530 enters the protective layer 510 at an obliquely upward angle, as shown in FIG.
- the arrow in the middle is upwards.
- the oblique downward arrow in Figure 6 indicates the corresponding reflected light.
- the self-luminous display panel 520 includes a first substrate 521, a second substrate 522, and a self-luminous circuit layer 523 between the first substrate 521 and the second substrate 522.
- the first substrate 521 is a transparent substrate
- the first substrate 521 is located above the second substrate 522
- the self-lighting circuit layer 523 includes a display area (not all shown), and the display area includes a plurality of display pixel units, as shown in FIG. Several of the display pixel units 5231 are shown.
- the display area can include one or more optical fingerprint sensing areas.
- each of the m display pixel units has at least one optical fingerprint sensing element, and m and n are any integers of 1 or more, k is Any integer from 1 to m ⁇ n.
- Each display pixel unit 5231 is shown in FIG. 6 to have an optical fingerprint sensing element 5232.
- the self-luminous display panel 520 can implement the optical fingerprint recognition function, and the corresponding content of the foregoing embodiment can be referred to, because the display area includes a corresponding optical fingerprint sensing area, and the optical fingerprint sensing area has a structure such as an optical fingerprint sensing element. .
- the light-emitting surface of the dot-shaped backlight 530 has a light guiding prism 540 , and the light emitted by the dot-shaped backlight enters the light guiding prism 540 from the light-emitting surface of the point backlight 530 , and then enters the light guiding prism 540 .
- Protective layer 510 is
- the light guiding prism 540 reduces the refraction of the light emitted by the point backlight 530, so that the upper surface area of the protective layer that the point backlight 530 can illuminate is larger.
- the light incident surface of the light guiding prism 540 is a curved surface facing the backlight 530, and the curved surface may be a side surface or a spherical surface of the cylinder, for example, the cylindrical side surface in FIG.
- the upper surface of the light guiding prism 540 is a plane parallel to the lower surface of the protective layer 510, and the lower surface of the light guiding prism 540 is a slope connecting the upper surface and the light incident surface.
- the display module in FIG. 6 can gather more light by using the curved surface.
- the divergence angle of the light entering the protective layer 510 is reduced, and the light utilization rate of the point backlight 530 is further improved.
- the lower surface of the light guiding prism 540 has a light absorbing layer 550.
- the function of the light absorbing layer 550 is also the same as that of the light absorbing layer 250 of FIG. 3, that is, the corresponding stray light can be eliminated. In other embodiments, if the fingerprint image has reached the requirement, it may be omitted.
- Another embodiment of the present invention provides another display module. Please refer to FIG. 7.
- the display module includes a protective layer 610, a self-luminous display panel 620, and a dot backlight 630.
- the self-luminous display panel 620 is located below the protective layer 610. At least a part of the self-luminous display panel 620 has an optical fingerprint recognition structure, and an optical fingerprint recognition function can be realized.
- the point backlight 630 is located under the protective layer 610, and the point backlight 630 is located on the side of the self-luminous display panel 620.
- the light emitted by the point backlight 630 enters the protective layer 610 at an obliquely upward angle, as shown in FIG.
- the arrow in the middle is upwards.
- the oblique downward arrow in Figure 7 indicates the corresponding reflected light.
- the self-luminous display panel 620 includes a first substrate 621, a second substrate 622, and a self-luminous circuit layer 623 between the first substrate 621 and the second substrate 622.
- the first substrate 621 is a transparent substrate, the first substrate 621 is located above the second substrate 622;
- the self-lighting circuit layer 623 includes a display area (not all shown), and the display area includes a plurality of display pixel units, as shown in FIG. Several of the display pixel units 6231 are shown.
- the display area can include one or more optical fingerprint sensing areas.
- each of the m display pixel units has at least one optical fingerprint sensing element, and m and n are any integers of 1 or more, k is Any integer from 1 to m ⁇ n.
- Each of the display pixel units 6231 is shown in FIG. 7 to have an optical fingerprint sensing element 6232. Since the display area includes a corresponding optical fingerprint sensing area, and the optical fingerprint sensing area has a structure such as an optical fingerprint sensing element, the self-luminous display panel 620 can implement an optical fingerprint identification function, and reference may be made to the corresponding content of the foregoing embodiment. .
- a light-transmitting adhesive 640 is disposed between the dot backlight 630 and the protective layer 610 , and the light-transmitting adhesive 640 covers the light-emitting surface of the dot-shaped backlight 630 and a portion of the lower surface of the protective layer 610 .
- the light emitted by the source 630 enters the transparent adhesive 640 from the light-emitting surface of the dot-shaped backlight, and enters the protective layer 610 from the transparent adhesive 640.
- the lower surface of the light-transmitting paste 640 has a light absorbing layer 670.
- the function of the light absorbing layer 670 is the same as that of the light absorbing layer 250 of FIG. 3, and reference may be made to the corresponding contents of the foregoing embodiments.
- the light absorbing layer on the lower surface of the light transmissive gel may be omitted if the fingerprint image has been met.
- a thickening layer 650 is further disposed between the self-luminous display panel 620 and the protective layer 610.
- the thickening layer 650 is laminated between the self-luminous display panel 620 and the protective layer 610.
- the lower surface of the protective layer 610 has a light shielding layer 660 , and the light shielding layer 660 is adjacent to the light transmissive adhesive 640 .
- the light transmissive adhesive 640 is adjacent to the light shielding layer 660 and the side and part of the thickening layer 650 .
- the sides of the light emitting display panel 620 are adjacent to each other.
- the incident angle range of the light entering the protective layer 610 is increased (the side of the thickened layer 650 can also be incident on the light), thereby enabling the protective layer
- the width of the 610 receiving light region is increased, thereby improving the quality of the fingerprint image collected by the display module.
- the light shielding layer 660 By providing the light shielding layer 660, it is possible to prevent other light from entering the protective layer from the lower surface of the protective layer 610, which further contributes to improving the fingerprint recognition performance of the module.
- the light emitted by the dot backlight 630 enters the protective layer 610 in two parts: a part passes through the transparent adhesive 640, and then enters the protective layer 610 from the lower surface of the protective layer 610; the other part is worn from the transparent adhesive 640. Thereafter, the side of the thickening layer 650 is entered, and after passing through the thickening layer 650, the protective layer 610 is further introduced from the lower surface of the protective layer 610.
- Another embodiment of the present invention provides another display module. Please refer to FIG. 8.
- the display module includes a protective layer 710, a self-luminous display panel 720, and a dot backlight 730.
- the self-luminous display panel 720 has an optical fingerprint recognition structure and can realize an optical fingerprint recognition function.
- the self-luminous display panel 720 is located below the protective layer 710.
- the dot backlight 730 is located under the protective layer 710, and the dot backlight 730 is located on the side of the self-luminous display panel 720, and the light emitted by the dot backlight 730 enters the protective layer at an obliquely upward angle. 710, the light is as shown by the oblique upward arrow in FIG.
- the oblique downward arrow in Figure 8 indicates the corresponding reflected light.
- the self-luminous display panel 720 includes a first substrate 721, a second substrate 722, and a self-luminous circuit layer 723 between the first substrate 721 and the second substrate 722.
- the first substrate 721 is a transparent substrate, the first substrate 721 is located above the second substrate 722;
- the self-lighting circuit layer 723 includes a display area (not all shown), and the display area includes a plurality of display pixel units, as shown in FIG. Several of the display pixel units 7231 are shown.
- the display area can include one or more optical fingerprint sensing areas. In the optical fingerprint sensing area, each of the m display pixel units has at least one optical fingerprint sensing element, and m and n are any integers of 1 or more, k is Any integer from 1 to m ⁇ n.
- Each display pixel unit 7231 is shown in FIG. 8 to have an optical fingerprint sensing element 7232.
- the self-luminous display panel 720 can implement the optical fingerprint recognition function, and the corresponding content of the foregoing embodiment can be referred to, because the display area includes a corresponding optical fingerprint sensing area, and the optical fingerprint sensing area has a structure such as an optical fingerprint sensing element. .
- the light-emitting surface 740 of the dot-shaped backlight 730 has a light-guiding prism 740.
- the light emitted from the dot-shaped backlight 730 enters the light-guiding prism 740 from the light-emitting surface of the dot-shaped backlight 730, and enters the protective layer 710 from the light-guiding prism 740.
- a thickening layer 750 is disposed between the self-luminous display panel 720 and the protective layer 710.
- the light incident surface (not labeled) of the light guiding prism 740 is a slope facing the point backlight 730, and the upper surface of the light guiding prism 740 is opposite to the protective layer 710.
- the plane of the lower surface is parallel
- the side surface of the light guiding prism 740 is a plane parallel to the side surface of the thickening layer 750
- the upper surface of the light guiding prism 740 is adhered to the lower surface of the protective layer 710
- the vertical side of the light guiding prism 740 is increased.
- the upper surface of the light guiding prism 740 and the lower surface of the protective layer 710 may be pasted by optical glue.
- the vertical side of the light guiding prism 740 and the side of the thickening layer 750 may also be pasted by optical glue.
- the lower surface of the protective layer 710 has a light shielding layer 760 adjacent to the light guiding prism 740. Through the light shielding layer 760, it can be ensured that the light of the point backlight 730 entering the protective layer 710 is first passed through the light guiding prism 740, and the light shielding layer 760 can also reduce the light It enters the protective layer of light.
- the function of the light guiding prism 740 can be referred to the corresponding content of the foregoing embodiment.
- the beveled top of the light guiding prism 740 is adjacent to the light shielding layer 760, and the vertical side of the light guiding prism 740 is also adjacent to a portion of the side surface of the self-luminous display panel 720.
- the light emitted by the dot backlight 730 enters the protective layer 710 in two parts: a part passes through the light guiding prism 740, and then enters the protective layer 710 from the lower surface of the protective layer 710; the other part passes through the light guiding prism 740. Thereafter, the side of the thickening layer 750 is entered, and after passing through the thickening layer 750, the protective layer 710 is further introduced from the lower surface of the protective layer 710.
- Another embodiment of the present invention provides another display module. Please refer to FIG. 9.
- the display module includes a protective layer 810, a self-luminous display panel 820, and a dot backlight 830.
- the self-luminous display panel 820 is located below the protective layer 810.
- the self-luminous display panel 820 has an optical fingerprint recognition structure and can realize an optical fingerprint recognition function.
- the point backlight 830 is located under the protective layer 810, and the point backlight 830 is located on the side of the self-luminous display panel 820.
- the light emitted by the point backlight 830 enters the protective layer 810 at an obliquely upward angle, as shown in FIG.
- the arrow in the middle is upwards.
- the oblique downward arrow in Figure 9 indicates the corresponding reflected light.
- the self-luminous display panel 820 includes a first substrate 821, a second substrate 822, and a self-luminous circuit layer 823 between the first substrate 821 and the second substrate 822.
- the first substrate 821 is a transparent substrate, the first substrate 821 is located above the second substrate 822;
- the self-lighting circuit layer 823 includes a display area (not all shown), and the display area includes a plurality of display pixel units, as shown in FIG. Several of the display pixel units 8231 are shown.
- the display area can include one or more optical fingerprint sensing areas.
- each of the m display pixel units has at least one optical fingerprint sensing element, and m and n are any integers of 1 or more, k is Any integer from 1 to m ⁇ n.
- each display pixel unit 8231 has an optical finger.
- the sensing element 8232 is patterned.
- the self-luminous display panel 820 can implement the optical fingerprint recognition function, and the corresponding content of the foregoing embodiment can be referred to, because the display area includes a corresponding optical fingerprint sensing area, and the optical fingerprint sensing area has a structure such as an optical fingerprint sensing element. .
- the light-emitting surface 840 of the dot-shaped backlight 830 has a light-guiding prism 840.
- the light emitted from the dot-shaped backlight 830 enters the light-guiding prism 840 from the light-emitting surface of the dot-shaped backlight 830, and enters the protective layer 810 from the light-guiding prism 840.
- a thickening layer 850 is disposed between the self-luminous display panel 820 and the protective layer 810.
- the light incident surface (not labeled) of the light guiding prism 840 is a curved surface facing the point backlight 830, and the upper surface of the light guiding prism 840 is a protective layer.
- the plane of the lower surface of the 810 is parallel
- the side surface of the light guiding prism 840 is a plane parallel to the side surface of the thickening layer 850
- the upper surface of the light guiding prism 840 is adhered to the lower surface of the protective layer 810
- the vertical side of the light guiding prism 840 is The side of the thickened layer 850 is pasted.
- the light guiding prism 840 Since the light incident surface of the light guiding prism 840 is a curved surface, the light guiding prism 840 also has the function of collecting light, so that the light is more concentrated, and the incident light enters the divergence angle of the protective layer 810, which is more helpful for the identification of the finger fingerprint.
- the upper surface of the light guiding prism 840 and the lower surface of the protective layer 810 may be pasted by optical glue.
- the vertical side of the light guiding prism 840 and the side of the thickening layer 850 may also be pasted by optical glue.
- the lower surface of the protective layer 810 has a light shielding layer 860, and the light shielding layer 860 is adjacent to the light guiding prism 840. Through the light shielding layer 860, it can be ensured that the light entering the protective layer 810 of the point backlight 830 is first passed through the light guiding prism 840, and the light shielding layer 860 can also reduce other light from entering the protective layer 810.
- the function of the light guiding prism 840 can be referred to the corresponding content of the foregoing embodiment.
- Another embodiment of the present invention provides another display module. Please refer to FIG. 1
- the display module includes a protective layer 910, a self-luminous display panel 920, and a dot backlight Source 930.
- the self-luminous display panel 920 is located below the protective layer 910.
- the self-luminous display panel 920 has an optical fingerprint recognition structure and can realize an optical fingerprint recognition function.
- the point backlight 930 is located under the protective layer 910, and the point backlight 930 is located on the side of the self-luminous display panel 920.
- the light emitted by the point backlight 930 enters the protective layer 910 at an obliquely upward angle.
- the arrow in the middle is upwards.
- the oblique downward arrow in Figure 10 indicates the corresponding reflected light.
- the self-luminous display panel 920 includes a first substrate 921, a second substrate 922, and a self-luminous circuit layer 923 between the first substrate 921 and the second substrate 922.
- the first substrate 921 is a transparent substrate, the first substrate 921 is located above the second substrate 922;
- the self-lighting circuit layer 923 includes a display area (not all shown), and the display area includes a plurality of display pixel units, as shown in FIG. Several of the display pixel units 9231 are shown.
- the display area can include one or more optical fingerprint sensing areas.
- each of the m display pixel units has at least one optical fingerprint sensing element, and m and n are any integers of 1 or more, k is Any integer from 1 to m ⁇ n.
- Each display pixel unit 9231 is shown in FIG. 10 to have an optical fingerprint sensing element 9232.
- the self-luminous display panel 920 can implement the optical fingerprint recognition function, and the corresponding content of the foregoing embodiment can be referred to, because the display area includes a corresponding optical fingerprint sensing area, and the optical fingerprint sensing area has a structure such as an optical fingerprint sensing element. .
- a thickened layer 940 is disposed between the self-luminous display panel 920 and the protective layer 910. At the same time, the area of the lower surface of the protective layer 910 opposite to the point backlight 930 is covered by the light shielding layer 950, and the light emitted by the point backlight 930 enters the thickening layer 940 from the side of the thickening layer 940, and then enters the thickening layer 940.
- the light-shielding layer 950 completely covers the area of the lower surface of the protective layer 910 opposite to the point backlight 930, and controls the light-emitting position and the light-emitting angle of the point backlight 930.
- the present embodiment allows the point-like backlight to enter the protective layer 910. All of the 930 rays enter from the side of the thickening layer 940. At this time, the angles of the rays are more consistent and the propagation path is more uniform, which helps to improve the quality of the collected fingerprint images, which helps to improve the fingerprint recognition of the module. performance.
- Another embodiment of the present invention provides another display module. Please refer to FIG. 1
- the display module includes a protective layer 1010, a self-luminous display panel 1020, and a point backlight 1030.
- the self-luminous display panel 1020 is located below the protective layer 1010.
- the self-luminous display panel 1020 has an optical fingerprint recognition structure and can realize an optical fingerprint recognition function.
- the dot backlight 1030 is located under the protective layer 1010, and the dot backlight 1030 is located on the side of the self-luminous display panel 1020.
- the light emitted by the dot backlight 1030 enters the protective layer 1010 at an obliquely upward angle, and the light is as shown in FIG.
- the arrow in the middle is upwards.
- the oblique downward arrow in Figure 11 indicates the corresponding reflected light.
- the self-luminous display panel 1020 includes a first substrate 1021, a second substrate 1022, and a self-luminous circuit layer 1023 between the first substrate 1021 and the second substrate 1022.
- the first substrate 1021 is a transparent substrate, the first substrate 1021 is located above the second substrate 1022;
- the self-lighting circuit layer 1023 includes a display area (not all shown), and the display area includes a plurality of display pixel units, as shown in FIG. Several of the display pixel units 10231 are shown.
- the display area can include one or more optical fingerprint sensing areas.
- each of the m display pixel units has at least one optical fingerprint sensing element, and m and n are any integers of 1 or more, k is Any integer from 1 to m ⁇ n.
- Each display pixel unit 10231 is shown in FIG. 11 to have an optical fingerprint sensing element 10232.
- the self-luminous display panel 1020 can implement the optical fingerprint recognition function, and the corresponding content of the foregoing embodiment can be referred to, because the display area includes a corresponding optical fingerprint sensing area, and the optical fingerprint sensing area has a structure such as an optical fingerprint sensing element. .
- a thickened layer 1040 is provided between the self-luminous display panel 1020 and the protective layer 1010. Meanwhile, the lower surface of the protective layer 1010 has a light shielding layer 1050.
- the side opposite to the point backlight 1030 of the thickening layer 1040 is a slope facing the dot backlight 1030, and the top of the slope is adjacent to the light shielding layer, as shown in FIG. .
- Layer 1040 then enters protective layer 1010 from thickened layer 1040.
- the area of the lower surface of the protective layer 1010 opposite to the point backlight 1030 is completely covered by the light shielding layer 1050. Also, the control of the point backlight 1030 ensures that the light of the point backlight 1030 entering the protective layer 1010 is from the thickening layer 1040. The side entry also makes these light angles more consistent, and the propagation path is more uniform, which helps to improve the quality of the captured fingerprint image, which helps to improve the fingerprint recognition performance of the module.
- the side surface of the thickening layer 1040 is inclined, and therefore, when the side slope of the thickening layer 1040 serves as a light incident surface, the light of the dot backlight 1030 of a larger angular range
- the protective layer 1010 can be entered by the side slope of the thickening layer 1040, so that the irradiation area of the incident light on the upper surface of the protective layer 1010 can be increased (increasing the fingerprint imaging width), thereby increasing the fingerprint imaging area.
- FIG. 12 is a bottom view, that is, FIG. 12 is a schematic view showing the structure under the protective layer, which is viewed from the lower surface of the protective layer to the upper surface direction, so that the corresponding point can be seen.
- Structure such as backlight, self-luminous display panel and protective layer. Therefore, the cross-sectional structure of the structure shown in FIG. 12 can be referred to FIG. 1 to FIG. 11, and conversely, the bottom view structure of the structure shown in FIGS. 1 to 11 can be referred to FIG.
- the display module includes a protective layer 1110, a self-luminous display panel 1120, and a dot backlight 1130.
- the protective layer 1110 is located at the bottom, and the self-luminous display panel 1120 is above the protective layer 1110.
- 1130 is also located above the protective layer 1110, and the dot backlight 1130 is located on the side of the self-luminous display panel 1120.
- the display module provided in this embodiment can also be seen: the self-luminous display panel 1120 is located under the protective layer 1110.
- the self-luminous display panel 1120 has an optical fingerprint recognition structure capable of realizing an optical fingerprint recognition function;
- the dot backlight 1130 is located at the protective layer Below the 1110, and the dot backlight 1130 is located on the side of the self-luminous display panel 1120, the light emitted by the dot backlight 1130 enters the protective layer 1110 at an obliquely upward angle.
- the self-luminous display panel 1120 includes a first substrate (not shown), a second substrate (not shown), and a self-luminous circuit layer (not shown) between the first substrate and the second substrate.
- the first substrate is a transparent substrate, and the first substrate is located above the second substrate;
- the self-illuminating circuit layer includes a display area, and the rectangular area labeled with the self-luminous display panel 1120 in FIG. 12 includes an area where the display area is located.
- the display area includes a plurality of display pixel units (not shown).
- the display area can include one or more optical fingerprint sensing areas.
- each of the m display pixel units has at least one optical fingerprint sensing element, and m and n are any integers of 1 or more, k is Any integer from 1 to m ⁇ n. Since the display area includes a corresponding optical fingerprint sensing area, and the optical fingerprint sensing area has a structure such as an optical fingerprint sensing element, the self-luminous display panel 1120 can implement an optical fingerprint recognition function, and reference may be made to the corresponding content of the foregoing embodiment. .
- the dot backlight 1130 is four LED lamps (not labeled), and the four LED lamps are evenly distributed on the same side of the self-luminous display panel 1120.
- the self-luminous display panel 1120 corresponds to four local optical sensing regions 1121.
- the local optical sensing area is a re-division of the optical fingerprint sensing area (the original division mode is not excluded, that is, there may be a case where a partial optical sensing area corresponds to one of the optical fingerprint sensing areas). Moreover, when there is only one optical fingerprint sensing area, each of the partial optical sensing areas is generally a partial area of the optical fingerprint sensing area.
- the display module further includes a touch structure, the touch structure includes four partial touch areas, and a partial optical sensing area 1121 corresponds to a partial touch area (at the same time, one The local touch area also corresponds to a local optical sensing area 1121).
- the touch structure includes four partial touch areas, and a partial optical sensing area 1121 corresponds to a partial touch area (at the same time, one The local touch area also corresponds to a local optical sensing area 1121).
- the local touch area is displayed, the corresponding partial touch area and the local optical sensing area 1121 completely coincide.
- an LED lamp can be used as the light source of the local optical sensing area 1121, and at the same time, the corresponding partial touch area is used to determine which specific touch area the finger is in contact with. Then, the corresponding local optical sensing area 1121 and the LED lamp are controlled to work to realize the collection of the finger fingerprint image.
- the entire self-luminous display panel 1120 is not required to perform fingerprint collection, not only The acquisition speed of the fingerprint image is improved, and the power consumption is reduced.
- the touch structure may be a capacitive touch structure, and the capacitive touch structure may be located between the protective layer and the self-luminous display panel (for example, bonding or being fabricated on the lower surface of the protective layer, for example, bonding) Or on the upper surface of the self-luminous display panel, the capacitive touch structure may also be integrated inside the self-luminous display panel.
- the dot backlight may also be two, three or more LED lights, which are evenly distributed on the same side of the self-luminous display panel 1120.
- the number of the local optical sensing area and the local touch area is equal to the number of LED lights, and the specific corresponding manner is also one-to-one correspondence. Please refer to the corresponding content above.
- each of the partial optical sensing regions may also correspond to a plurality of partial touch regions, thereby improving the accuracy of detecting the position of the finger pressing and improving the accuracy of positioning the finger pressing.
- FIG. 13 is a bottom view, that is, FIG. 13 is a schematic view showing the structure under the protective layer, which is viewed from the lower surface of the protective layer to the upper surface direction, so that the corresponding point can be seen.
- Structure such as backlight, self-luminous display panel and protective layer. Therefore, the cross-sectional structure of the structure shown in FIG. 13 can be referred to FIG. 1 to FIG. 11, and conversely, the bottom view structure of the structure shown in FIGS. 1 to 11 can be referred to FIG.
- the display module includes a protection layer 1210, a self-luminous display panel 1220, and a point backlight (the dot backlight is not separately labeled, the dot backlight includes the following six LED lamps), and the protective layer 1210 Located at the bottom, above the protective layer 1210 is a self-luminous display panel 1220, the point backlight is also located above the protective layer 1210, and the point backlight is located at the side of the self-luminous display panel 1220.
- the display module provided in the embodiment can also be seen: the self-luminous display panel 1220 is located under the protective layer 1210 .
- the self-luminous display panel 1220 has an optical fingerprint recognition structure capable of realizing an optical fingerprint recognition function; the dot-shaped backlight is located under the protective layer 1210, and the dot-shaped backlight is located at a side of the self-luminous display panel 1220, the point Light from the backlight enters the protective layer 1210 at an obliquely upward angle.
- the self-luminous display panel 1220 includes a first substrate (not shown), a second substrate (not shown), and a self-luminous circuit layer (not shown) between the first substrate and the second substrate.
- the first substrate is a transparent substrate, the first substrate is located above the second substrate;
- the self-illuminating circuit layer includes a display area, and the rectangular area labeled with the self-luminous display panel 1220 in FIG. 13 includes the area where the display area is located.
- the display area includes a plurality of display pixel units (not shown).
- the display area can include one or more optical fingerprint sensing areas.
- each of the m display pixel units has at least one optical fingerprint sensing element, and m and n are any integers of 1 or more, k is Any integer from 1 to m ⁇ n. Since the display area includes a corresponding optical fingerprint sensing area, and the optical fingerprint sensing area has a structure such as an optical fingerprint sensing element, the self-luminous display panel 1220 can implement an optical fingerprint recognition function, and reference may be made to the corresponding content of the foregoing embodiment. .
- the dot backlight in the embodiment is six LED lights, which are respectively an LED light a, an LED light b, an LED light c, an LED light d, an LED light e, and an LED light f, six The LED lights are evenly distributed on the same side of the self-luminous display panel 1220.
- the self-luminous display panel 1220 correspondingly includes fourteen local optical sensing regions, which are local optical sensing regions 1-14, respectively. In the plane shown in FIG. 13, the optical fingerprint sensing of the self-luminous display panel 1220 is divided into fourteen by fourteen adjacent dashed frames. Local optical sensing area. One LED light corresponds to four local optical sensing areas.
- the local optical sensing area is a re-dividing of the optical fingerprint sensing area (the original dividing manner is not excluded, that is, there may be a local optical sensing area corresponding to one of the optical fingerprint sensing areas. Case).
- each of the partial optical sensing areas is generally a partial area of the optical fingerprint sensing area.
- the optical fingerprint sensing of the self-luminous display panel 1220 is divided into fourteen partial optical sensing regions using thirteen dashed lines.
- One LED light corresponds to four local optical sensing areas.
- the display module further includes a touch structure, the touch structure includes fourteen partial touch regions, and a local optical sensing region corresponds to a partial touch region, that is, local optics.
- the sensing area and the local touch area are in one-to-one correspondence. In the up-view plane shown in FIG. 13, if the partial touch area is displayed, the corresponding partial touch area and the local optical sensing area completely coincide.
- the working state of the corresponding local optical sensing area (for example, switching between two states of working and non-working) can be controlled by using the local touch area, and the corresponding content of the foregoing embodiment can be referred to.
- the number of LED lamps is less than the number of the local optical sensing regions, and the plurality of partial optical sensing regions correspond to one LED lamp, and each of the LED lamps corresponds to multiple phases. Adjacent partial optical sensing regions, and the partial optical sensing regions corresponding to the two adjacent LED lamps are identical.
- the LED lamp a corresponds to the local optical sensing area 1-4
- the LED lamp b corresponds to the local optical sensing area 3-6
- the LED lamp c corresponds to the local optical sensing area 5-8
- the LED lamp d corresponds to the local optical In the sensing area 7-10
- the LED lamp e corresponds to the local optical sensing area 9-12
- the LED lamp f corresponds to the local optical sensing area 11-14.
- the width of the corresponding area of the LED lamp a to the LED lamp f is as shown by Ra to Rf in FIG. 13, and these widths can prove the corresponding relationship between the LED lamp and the local optical sensing area, that is, one LED lamp corresponds to four consecutive local optical sensing regions. .
- the corresponding partial optical sensing regions are identical, that is, they all correspond to the local optical sensing regions 3-4.
- "partially identical" indicates that they each correspond to a different The local optical sensing area, for example, the LED lamp a corresponds to the local optical sensing area 1-2, and the LED lamp b corresponds to the local optical sensing area 5-6.
- the corresponding arrangement of the above structure and the area is also because the imaging principle of the present invention shows that the display module can only use one LED light at a time when fingerprinting (if two LED lights are used at the same time) There is interference to blur the image; and if the partial optical sensing regions corresponding to two adjacent LED lamps do not have the same portion, if the finger is pressed at the boundary of the two local optical sensing regions, it usually needs to be performed. Two images were taken to obtain different partial fingerprint images and then combined together. However, this embodiment reduces the distance between the LED lamps by providing more than one LED lamp.
- the number of local optical sensing regions is increased, thereby achieving that: a plurality of adjacent partial optical sensing regions correspond to one LED lamp, and the adjacent two of the LED lamps correspond to the The local optical sensing regions are partially identical.
- the finger pressing position only the LED lamp closest to the finger pressing position needs to be opened for fingerprint image acquisition at a time, and the most suitable one of the LED lights can be used to collect the fingerprint image, so that one imaging can be realized. Can collect the corresponding fingerprint image. Therefore, the collection efficiency and the collection effect are further improved.
- the spacing between the LED lamps much smaller than the pressing coverage width of the fingers (for example, the spacing of the LED lamps can be less than 5 mm).
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Abstract
一种显示模组,包括:保护层(110);自发光显示面板(120),自发光显示面板(120)位于保护层(110)下方;自发光显示面板(120)的至少局部具有光学指纹识别结构,能够实现光学指纹识别功能;显示模组还包括:点状背光源(130),点状背光源(130)位于保护层(110)下方且位于自发光显示面板(120)侧边,点状背光源(130)发出的光线以斜向上的角度进入保护层(110)。显示模组集成光学指纹识别功能。
Description
本发明涉及光学指纹识别领域,尤其涉及一种显示模组。
指纹成像识别技术,是通过指纹传感器采集到人体的指纹图像,然后与系统里的已有指纹成像信息进行比对,来判断正确与否,进而实现身份识别的技术。由于其使用的方便性,以及人体指纹的唯一性,指纹识别技术已经大量应用于各个领域。比如公安局、海关等安检领域,楼宇的门禁系统,以及个人电脑和手机等消费品领域等等。
指纹成像识别技术的实现方式有光学成像、电容成像、超声成像等多种技术。相对来说,光学指纹成像技术,其成像效果相对较好,设备成本相对较低。
现有技术中,已有在显示模组中集成指纹识别功能,但其通常是采用电容式指纹识别原理。更多有关显示模组中集成指纹识别功能的内容可参考公开号为CN106024833A的中国发明专利申请。
现有集成指纹识别功能的显示模组结构有待改进,性能有待提高。
发明内容
本发明解决的问题是提供一种显示模组,以更好地实现将指纹识别功能集成在显示模组中,从而在显示的同时,得到清晰的指纹图像。
为解决上述问题,本发明提供了一种显示模组,包括:保护层;自发光显示面板,所述自发光显示面板位于所述保护层下方;所述自发光显示面板的至少局部具有光学指纹识别结构,能够实现光学指纹识别功能;所述显示模组还包括:点状背光源,所述点状背光源位于
所述保护层下方且位于所述自发光显示面板侧边,所述点状背光源发出的光线以斜向上的角度进入所述保护层。
可选的,所述自发光显示面板包括第一基板、第二基板以及第一基板和第二基板之间的自发光电路层;所述第一基板为透光基板,所述第一基板位于所述第二基板上方;所述自发光电路层包括显示区,所述显示区包括多个显示像素单元;所述显示区包括一个或者多个光学指纹感测区;在所述光学指纹感测区,每m×n个所述显示像素单元中,k个所述显示像素单元的每一个具有至少1个光学指纹感测元件,m和n为1以上的任意一个整数,k为1至m×n的任意一个整数。
可选的,所述光学指纹感测元件位于所述第二基板上表面,或者位于所述第一基板下表面。
可选的,所述自发光显示面板包括第一基板、第二基板以及第一基板和第二基板之间的自发光电路层;所述第一基板为透光基板,所述第一基板位于所述第二基板上方;所述自发光电路层包括显示区,所述显示区包括多个显示像素单元;所述第一基板上表面包括位于所述显示区上方的一个或者多个光学指纹感测区;所述光学指纹感测区具有光学指纹感测元件。
可选的,在所述光学指纹感测区,每m×n个所述显示像素单元上方的区域中,k个所述显示像素单元的每一个上方具有至少1个光学指纹感测元件,m和n为1以上的任意一个整数,k为1至m×n的任意一个整数。
可选的,所述光学指纹感测元件位于所述显示像素单元的斜上方。
可选的,所述点状背光源与所述保护层之间具有透光胶,所述透光胶覆盖所述点状背光源的出光面和所述保护层的部分下表面,所述点状背光源发出的光线从所述点状背光源的出光面进入所述透光胶,
再从所述透光胶进入所述保护层。
可选的,所述透光胶的至少部分下表面有吸光层。
可选的,所述自发光显示面板和所述保护层之间具有增厚层,所述保护层下表面具有遮光层,所述遮光层与所述透光胶相邻。
可选的,所述点状背光源的出光面前面具有聚光透镜,所述聚光透镜能够减小所述点状背光源的光线进入所述保护层的发散角,所述点状背光源的光线先进入所述聚光透镜,再进入所述保护层。
可选的,所述保护层下表面与所述点状背光源相对的区域还包括增透膜,所述增透膜能够增加所述点状背光源的光线进入所述保护层的比例。
可选的,所述点状背光源的出光面前面具有导光棱镜,所述点状背光源发出的光线从所述点状背光源的出光面进入所述导光棱镜,再从所述导光棱镜进入所述保护层。
可选的,所述导光棱镜的入光面为面向所述点状背光源的弧面,所述导光棱镜上表面为与所述保护层下表面相平行的平面,所述导光棱镜的下表面为连接上表面和入光面的斜面。
可选的,所述自发光显示面板和所述保护层之间具有增厚层,所述导光棱镜的入光面为面向所述点状背光源的斜面,所述导光棱镜上表面为与所述保护层下表面相平行的平面,所述导光棱镜的侧面为与所述增厚层侧面相平行的平面,所述导光棱镜的上表面与所述保护层下表面粘贴,所述导光棱镜的竖直侧面与所述增厚层的侧面粘贴。
可选的,所述自发光显示面板和所述保护层之间具有增厚层,所述导光棱镜的入光面为面向所述点状背光源的弧面,所述导光棱镜上表面为与所述保护层下表面相平行的平面,所述导光棱镜的侧面为与所述增厚层侧面相平行的平面,所述导光棱镜的上表面与所述保护层下表面粘贴,所述导光棱镜的侧面与所述增厚层的侧面粘贴。
可选的,所述导光棱镜的下表面具有吸光层。
可选的,所述保护层下表面具有遮光层,所述遮光层与所述导光棱镜相邻。
可选的,所述自发光显示面板和所述保护层之间具有增厚层。
可选的,所述保护层下表面与所述点状背光源相对的区域被遮光层覆盖,所述点状背光源发出的光线从所述增厚层的侧面进入所述增厚层,再从所述增厚层进入所述保护层。
可选的,所述保护层下表面具有遮光层,所述增厚层与所述点状背光源相对的侧面为面向所述点状背光源的斜面,斜面顶部与所述遮光层相邻,所述点状背光源发出的光线从所述增厚层的斜面进入所述增厚层,再从所述增厚层进入所述保护层。
可选的,所述点状背光源为一个LED灯;或者,所述点状背光源为两个以上LED灯。
可选的,所述点状背光源为两个以上LED灯,所述两个以上LED灯均匀分布在所述自发光显示面板的同一侧边。
可选的,所述自发光显示面板包括两个以上的局部光学感应区域,一个所述LED灯对应一个所述局部光学感应区域;所述显示模组还包括触控结构,所述触控结构包括两个以上的局部触控区域,一个所述局部光学感应区域对应一个所述局部触控区域。
可选的,所述自发光显示面板包括三个以上的局部光学感应区域,所述LED灯数目少于所述局部光学感应区域的数目;所述显示模组还包括触控结构,所述触控结构包括三个以上的局部触控区域,一个所述局部光学感应区域对应一个所述局部触控区域。
可选的,每一个所述LED灯对应多个相邻的所述局部光学感应区域;且相邻的两个所述LED灯对应的所述局部光学感应区域部分相同。
与现有技术相比,本发明的技术方案具有以下优点:
本发明的技术方案中,从上到下设置保护层和自发光显示面板。其中,所述自发光显示面板的至少局部具有光学指纹识别结构,能够实现光学指纹识别功能。同时,显示模组还具有位于所述保护层下方且位于所述自发光显示面板侧边的点状背光源,所述点状背光源发出的光线又以斜向上的角度进入所述保护层。在此结构中,点状背光源发出的光线不需要经过自发光显示面板,就进入保护层,在保护层与手指的接触界面处,光线进行了相应的反射和折射等光学现象,再返回自发光显示面板,被自发光显示面板的光学指纹识别结构所接收,从而使得自发光显示面板得到相应的指纹图像,整个过程即利用显示模组实现对手指指纹图像的采集,并且,采集到的指纹图像清晰,最终使显示模组集成有良好的指纹识别功能。
同时,这种结构的显示模组能够在使用时,通过控制自发光显示面板具有光学指纹识别结构的显示区域在指纹图像时,停止显示工作或显示特定画面,而其它区域则可以显示与指纹图像采集工作相关联的信息,从而可以使得显示功能和指纹识别功能相互配合起来,实现更好的用户使用体验。
图1是本发明一实施例所提供的显示模组剖面结构示意图;
图2是图1所示显示模组中自发光显示面板的俯视示意图;
图3是本发明另一实施例所提供的显示模组剖面结构示意图;
图4是本发明另一实施例所提供的显示模组剖面结构示意图;
图5是本发明另一实施例所提供的显示模组剖面结构示意图;
图6是本发明另一实施例所提供的显示模组剖面结构示意图;
图7是本发明另一实施例所提供的显示模组剖面结构示意图;
图8是本发明另一实施例所提供的显示模组剖面结构示意图;
图9是本发明另一实施例所提供的显示模组剖面结构示意图;
图10是本发明另一实施例所提供的显示模组剖面结构示意图;
图11是本发明另一实施例所提供的显示模组剖面结构示意图;
图12是本发明另一实施例所提供的显示模组仰视结构示意图;
图13是本发明另一实施例所提供的显示模组仰视结构示意图。
正如背景技术所述,现有技术多采用电容式指纹成像技术与自发光显示面板的显示模组进行集成。
为此,本发明提供一种显示模组中,将光学指纹传感器与自发光显示面板集成在一起(具体将光学指纹传感器集成在自发光显示面板中),从而在实现显示的同时,能够实现指纹识别功能,并且,通过相应的结构设计,使得显示模组能够采集到清晰的指纹图像,实现显示功能和指纹识别功能相互配合,使得用户对显示模组具有更好的使用体验。
为使本发明的上述目的、特征和优点能够更为明显易懂,下面结合附图对本发明的具体实施例做详细的说明。
本说明书中,除图12和图13的部分内容外,其它内容中的上下关系,均是以将显示模组放置在用户眼睛下方,并且令保护层位于最上方的方位来进行定义的。也就是说,如果说一个结构位于另一个结构的上方,则说明当显示模组放置在用户眼睛下方且保护层位于最上方时,这个结构比另一个结构更加靠近用户眼睛,在此一并说明。
本发明实施例提供一种显示模组,请结合参考图1和图2。图1为显示模组剖面示意图,图2为显示模组中自发光显示面板的俯视示意图。
图1显示,所述显示模组包括保护层110、自发光显示面板120和点状背光源130。自发光显示面板120位于保护层110下方。自发光显示面板120的至少局部具有光学指纹识别结构,能够实现光学指纹识别功能。点状背光源130位于保护层110下方且位于自发光显示面板120侧边,点状背光源130发出的光线以斜向上的角度进入保护层110,所述光线如图1中斜向上的箭头所示。图1中斜向下的箭头则表示相应的反射光线。为便于显示,各实施例的各图中,均忽略光线在不同光介质结构之间的折射,在此一并说明。
自发光显示面板120包括第一基板121、第二基板122以及第一基板121和第二基板122之间的自发光电路层123。第一基板121为透光基板,第一基板121位于第二基板122上方。
自发光电路层123包括显示区(显示区未全部示出),所述显示区包括多个显示像素单元1231。本实施例在自发光显示面板120的显示区中设置相应的光学指纹识别结构,从而使自发光显示面板120能够实现光学指纹识别功能。
请参考图2,图2显示了自发光显示面板120的俯视结构,自发光显示面板120如图2中大的实线矩形所示,则自发光显示面板120的显示区必定位于这个大实线矩形内。本实施例设置所述显示区包括一个光学指纹感测区120a,光学指纹感测区120a用图2中的大虚线框包围,以突出显示。
本实施例中,光学指纹感测区120a的面积小于所述显示区的面积,即光学指纹感测区120a仅为所述显示区的其中一部分。
其它实施例中,当显示区仅包括一个光学指纹感测区时,也可以使光学指纹感测区的面积和显示区的面积相等,即整个所述显示区所在区域同时也是所述光学指纹感测区所在区域。
其它实施例中,显示区也可以是包括多个(两个以上)光学指纹感测区。此时,每个光学指纹感测区的均为显示区的一部分,而全部
光学指纹感测区的总合可以为所述显示区,也可以小于所述显示区。
请继续参考图2,所述显示区包括多个显示像素单元1231,显示像素单元1231所在区区域的俯视形状如图2中小虚线框包围所示,显示像素单元1231通常呈行列(阵列)排布。因此,光学指纹感测区120a中,同样也包括行列排布的多个显示像素单元1231。需要说明的是,图2中仅显示出光学指纹感测区120a中的显示像素单元1231,而不位于光学指纹感测区120a中的显示像素单元1231未示出。
需要指出的是,其他实施例中,显示像素单元还可以呈奇偶行(列)错位排布,此时,在微观上,每三个显示像素单元呈锐角三角形(例如锐角等腰三角形,或者等边三角形)的三个顶点排列。其它实施例中,显示像素单元还可以是其他排列方式。
图2中,在光学指纹感测区120a,每2×2个显示像素单元1231中,有2个显示像素单元1231各具有1个光学指纹感测元件1232,图2中用小实线矩形A框选了其中的一组2×2个显示像素单元1231以加强显示。
本实施例中,具体地将各个光学指纹感测元件1232均制作在2×2个显示像素单元1231的第一行,即上面的2个。光学指纹感测元件1232为光电转化器件,例如可以为光电二极管等。
图1中的自发光显示面板120剖面示意结构为图2中自发光显示面板120沿B-B’点划线剖切后的示意结构。而B-B’点划线经过这些光学指纹感测元件1232及其所在的显示像素单元1231,因此,图1中看到每个显示像素单元1231中均具有一个光学指纹感测元件1232。但实际上,本实施例中,光学指纹感测区120a中只有一半的显示像素单元1231具有光学指纹感测元件1232。
本实施例中,每个显示像素单元1231可以为单像素结构,即显示像素单元1231不包括子像素。此时,光学指纹感测元件1232可以制作在显示像素单元1231的适当位置。
其它实施例中,显示像素单元也可以包括了多个子像素(例如三个子像素或者四个子像素),此时光学指纹感测元件可以制作在各个子像素以外的区域,也可以制作在某个子像素内。
其它实施例中,在光学指纹感测区,每m×n个显示像素单元中,k个显示像素单元的每一个具有至少1个光学指纹感测元件,m和n为1以上的任意一个整数,k为1至m×n的任意一个整数。图2所示实施例为m和n均等于2,k等于2的情形。
在上述前提下,当k等于1时(即每m×n个所述显示像素单元中,一个所述显示像素单元具有至少1个光学指纹感测元件),m和n为1以上的任意一个整数。
其它实施例中,可以选择“m和n为2且k为1”的情形。
其它实施例中,当在所述光学指纹感测区,每m×n个所述显示像素单元中,k个所述显示像素单元的每一个具有至少1个光学指纹感测元件的情况下,可以进一步设置m和n中至少有1个大于1,且k小于m×n。
其它实施例中,可以是每个显示像素单元中均具有1个光学指纹感测元件。其它实施例中,也可以是每个显示像素单元中均具有多个(例如2个)光学指纹感测元件。例如,第奇数行的每个显示像素单元中均具有4个光学指纹感测元件,而第偶数行的每个显示像素单元中均具有2个光学指纹感测元件。
其它实施例中,可以是每个显示像素单元包括3个子像素,并且,每1×2个显示像素单元中,有1个显示像素单元具有1个光学指纹感测元件。其它实施例中,也可以是每个显示像素单元包括3个子像素,并且,位于第奇数行的每相邻两个显示像素单元中,其中一个显示像素单元具有2个光学指纹感测元件,另一个显示像素单元具有1个光学指纹感测元件。
图2中,在光学指纹感测区120a,相邻光学指纹感测元件1232
之间的距离可以为30μm~100μm。由于人体指纹的纹路间距一般在200μm左右,太密集的光学指纹感测元件1232没有实际的好处。采集指纹图像时,有两个重要的要求:一个是采集图像的解析度,即所述光学指纹感测区120a中相邻光学指纹感测元件1232之间的距离不能太大;另一个是采集面积要足够大,即需要采集一定面积的指纹图像,从而获取足够多的指纹信息。所以相邻光学指纹感测元件1232之间的距离为30μm~100μm就可以了。如果它们之间的距离太大,指纹图像解析度不够,无法用于指纹识别。如果它们之间的距离更小,虽然图像解析度会更好,但是对实际的指纹识别的效果不会有明显改善。而且由于像素尺寸减小,采集同样面积的指纹图像时,指纹图像的数据量会增加,从而使图像采集时间增加,所述光学指纹感测区120a的采集功耗增加,还会使得后续的图像处理的时间变长。
请返回参考图1,光学指纹感测元件1232位于第二基板122上表面,即本实施例将光学指纹感测元件1232制作在第二基板122上表面。
图1显示,自发光显示面板120还可以包括密封结构(未标注)。密封结构也位于第一基板121和第二基板122之间。密封结构与第一基板121和第二基板122一起,将自发光电路层123密封在第一基板121和第二基板122之间。第一基板121为透光基板,因此其具体材料可以为无机玻璃或者有机玻璃,也可以是有机玻璃以外的其它塑料制品。第二基板122的材料选择范围可以更大,可以选择透光材料或者非透光材料。
请返回参考图1,显示了自发光显示面板120中的自发光电路层123包括多个显示像素单元1231。以图2相似的,图1中用虚线框示意出显示像素单元1231所在区域,及各个显示像素单元1231相邻关系,同时,在图1的剖面中,每个显示像素单元1231均具有一个光学指纹感测元件1232。但应该知道,自发光显示面板120包含不包括光学指纹感测元件的显示像素单元1231。
需要注意,图1中虚线框包括了部分第一基板121和第二基板122,但这只是为了便于显示,显示像素单元1231所在区域通常并不包括第一基板121和第二基板122。多个其它实施例的剖面结构采用相同的虚线框显示方式,在此一并说明。
本实施例中,自发光显示面板120可以为OLED显示面板,此时自发光电路层123的显示像素单元1231可以包括阳极层、空穴注入层(HIL)、发光层(EML)、电子注入层(EIL)和阴极层等结构,还可以具有空穴传输层(HTL)和电子传输层(ETL),还可以包括驱动OLED的TFT、驱动金属线和存储电容等结构。OLED显示面板的发光原理为:在一定电压驱动下,电子和空穴分别从阴极层和阳极层迁移到发光层,并在发光层中相遇,形成激子并使发光分子激发,发光分子经过辐射弛豫而发出可见光(或其它光线)。
点状背光源130可以为一个LED灯。所述LED灯的光可以为近紫外光、紫色光、蓝色光、绿色光、黄色光、红色光、近红外光或白色光。点状背光源130也可以为两个以上LED灯,LED灯均匀分布在自发光显示面板120的不同侧边。
保护层110可以是扁平基板,或者是具有扁平部分的其它形状。保护层110的材料可以为透明材料,具体材料可以为无机玻璃或者有机玻璃,也可以是有机玻璃以外的其它塑料制品。
自发光显示面板120可以是位于保护层110正下方,并且可以是直接层叠于保护层110下表面,即两者直接接触,直接层叠。其它情况下,自发光显示面板120也可以通过光学胶粘贴在保护层110下表面。采用光学胶粘贴,可以使得保护层110和自发光显示面板120之间避免存在空气,进一步提高模组的光学性能。
如图1所示,点状背光源130与自发光显示面板120侧边之间可以具有间隔(未标注),通过调整此间隔的大小,可以调整点状背光源130光线到保护层110下表面的入射角度。
其它实施例中,也可以设置点状背光源与自发光显示面板侧面直接接触而没有间隔。
如图1所示,点状背光源130与保护层110下表面之间可以具有间隔(未标注),通过调整此间隔的大小,同样可以调整点状背光源130光线到保护层110下表面的入射角度。
实施例中,也可以设置点状背光源和保护层下表面直接接触。
本实施例中,点状背光源130发出的光线斜向上进入保护层110,在到达保护层110上表面后,会在手指指纹与保护层110上表面所形成的界面处发生反射和折射等光学现象,产生相应的反射光线;反射光线斜向下返回保护层110,并穿过保护层110而到达自发光显示面板120,并被显示像素单元1231中的光学指纹感测元件1232接收,从而能够实现指纹图像采集,实现指纹识别功能。
本实施例将点状背光源130设置在保护层110下方,并且是设置在自发光显示面板120侧边。在点状背光源130位于自发光显示面板120侧边的前提下,又设置点状背光源130发出的光线以斜向上的角度进入保护层110,此时,点状背光源130发出的光线不必经过自发光显示面板120就进入了保护层110,从而用于手指指纹图像的采集,即实现对手指指纹图像的采集,相应光线的利用率提高,提高了最终光学指纹感测元件1232能够接收到的信号量,采集到的指纹图像清晰,因此,显示模组集成有良好的指纹识别功能。
本实施在点状背光源130与保护层110之间不增加任何结构,此时,整个显示模组的结构简单,制作工艺简单。
相比于现有采用导光板的面光源而言,点状背光源130能够使得光线沿同一个方向偏移,距离点状背光源130位置相近的光线偏移量相近,光线角度差异小,避免了光线之间的相互干扰和相互影响,因此,点状背光源130进入保护层110的光线最终基本以相近的角度进入自发光显示面板120,从而使得所采集的指纹图像畸变较小,指纹
图像更加清楚(即能够得到清晰的指纹图像),提高显示模组所采集到的指纹图像质量,提高模组的指纹识别性能。
本发明实施例所提供的显示模组中,可以通过相应的使用方法,实现在显示模组的显示区域内采集指纹图像,从而能够减小应用这种显示面板的电子产品外观尺寸,提高电子产品的屏占比,提高电子产品的外观美观度(例如可以提高手机产品的屏占比,提高手机产品的外观美观度)。例如,将所述自发光显示面板120中的光学指纹感测区120a定义为第一显示区域,其它部分的显示区域定义为第二显示区域;当光学指纹感测元件1232进行指纹图像采集工作时,控制所述第一显示区域停止显示工作或显示特定画面。当光学指纹感测元件1232进行指纹图像采集工作时,控制所述第二显示区域显示与指纹图像采集工作相关联的信息。这种使用方法能够使得显示功能和指纹识别功能相互配合起来,实现更好的用户使用体验。
所述使用方法还可以进一步开拓指纹识别功能的应用场景,例如,在光学指纹感测元件1232未进行工作之前,令所述第一显示区域显示相应的显示图标,指示用户将手指放入图标内。当用户将手指放入显示图标的区域后,可利用现有的显示面板自身或外带的触控功能,感知用户已经将手指放入了第一显示区域,从而可以控制光学指纹感测元件1232进入工作状态,此时,按压指纹的指纹图像会被第一显示区域下方的光学指纹感测元件1232采集,完成指纹图像采集功能,并且,可以进一步运用于与内部储存的已有指纹图像进行识别,进一步运用进行加密/解锁等功能。
本发明另一实施例提供另一种显示模组,请参考图3。
所述显示模组包括保护层210、自发光显示面板220和点状背光源230。自发光显示面板220位于保护层210下方。自发光显示面板220的至少局部具有光学指纹识别结构,能够实现光学指纹识别功能。点状背光源230位于保护层210下方,且点状背光源230位于自发光显示面板220侧边,点状背光源230发出的光线以斜向上的角度进入
保护层210,所述光线如图3中斜向上的箭头所示。图3中斜向下的箭头则表示相应的反射光线。
自发光显示面板220包括第一基板221、第二基板222以及第一基板221和第二基板222之间的自发光电路层223。第一基板221为透光基板,第一基板221位于第二基板222上方;自发光电路层223包括显示区(未全部示出),所述显示区包括多个显示像素单元,如图3中显示了其中的若干显示像素单元2231。所述显示区可以包括一个或者多个光学指纹感测区。在所述光学指纹感测区,每m×n个显示像素单元中,k个显示像素单元的每一个具有至少1个光学指纹感测元件,m和n为1以上的任意一个整数,k为1至m×n的任意一个整数。如图3中显示每个显示像素单元2231均具有光学指纹感测元件2232。由于所述显示区包括相应的光学指纹感测区,而光学指纹感测区具有光学指纹感测元件等结构,因此,自发光显示面板220能够实现光学指纹识别功能,可参考前述实施例相应内容。
本实施例中,光学指纹感测元件2232位于第一基板121下表面,即本实施例将光学指纹感测元件2232制作在第一基板121下表面。
如图3所示,在点状背光源230与保护层210之间具有透光胶240,透光胶240覆盖点状背光源230的出光面和保护层210的部分下表面,点状背光源230发出的光线从点状背光源的出光面进入透光胶240,再从透光胶240进入保护层210。
当不存在透光胶时,点状背光源发出的光线通常需要经过空气环境再进入保护层,此时光会发生反射等现象,造成进入保护层的光线的减少,而且光线从空气再进入保护层会有较明显的折射现象,折射会减小入射光的照射面积(可以对比参考图1和图3,图1中光线在保护层上表面上照射面积显然小于图3中光线在保护层上表面上照射面积)。而通过增加透光胶240,使光线不需要经过空气,增加入射光量,同时,透光胶240的折射率与保护层210的折射率通常较为接近,因此,可以增加入射光在保护层上表面的照射面积(增加纵向
深度),从而增加指纹成像面积。
如图3所示,透光胶240下表面具有吸光层250。透光胶240通常有一部分直接覆盖到点状背光源230(被覆盖的通常包括点状背光源230出光面),透光胶240位于其所覆盖到的点状背光源230下方的表面均属于透光胶240的下表面。点状背光源230通常为LED灯,LED灯的出射光角度较大,会有部分光斜向下照射到透光胶240下表面。此部分光会在透光胶240的下表面发生反射和散射,重新产生斜上方进入保护层210的次级光线。但是这些次级光线的已经属于杂散光,如果和原来直接斜向上进入保护层210的光线有交叉,则指纹图像成像会错位,即会使得指纹图像受到干扰而变模糊。所以,通过在透光胶240的下表面增加吸光层250,消除这些杂散光,从而进一步提高指纹图像质量。其它实施例中,如果指纹图像已经达到要求,也可以省略透光胶下表面的吸光层。
更多有关本实施例所提供显示模组的结构、性质和优点可参考前述实施例相应内容。
本发明另一实施例提供另一种显示模组,请参考图4。
所述显示模组包括保护层310、自发光显示面板320和点状背光源330。自发光显示面板320位于保护层310下方。自发光显示面板320的至少局部具有光学指纹识别结构,能够实现光学指纹识别功能。点状背光源330位于保护层310下方,且点状背光源330位于自发光显示面板320侧边,点状背光源330发出的光线以斜向上的角度进入保护层310,所述光线如图4中斜向上的箭头所示。图4中斜向下的箭头则表示相应的反射光线。
自发光显示面板包括第一基板321、第二基板322以及第一基板321和第二基板322之间的自发光电路层323。第一基板321为透光基板,第一基板321位于第二基板322上方。自发光电路层323包括显示区,显示区包括多个显示像素单元,如图4中显示了其中的若干
显示像素单元3231。
与前述实施例不同的是,本实施例将光学指纹感测元件设置于第一基板321上表面。
具体的,第一基板321上表面包括位于显示区上方的一个或者多个光学指纹感测区。所述光学指纹感测区具有光学指纹感测元件。并且,本实施继续设置每m×n个显示像素单元3231上方的区域中,k个显示像素单元3231的每一个上方具有至少1个光学指纹感测元件,m和n为1以上的任意一个整数,k为1至m×n的任意一个整数。如图4中显示每个显示像素单元3231上方均具有一个光学指纹感测元件3232。由于第一基板321上表面具有相应的光学指纹感测区,而光学指纹感测区具有光学指纹感测元件等结构,因此,自发光显示面板320能够实现光学指纹识别功能,可参考前述实施例相应内容。
本实施例中,还特别设置每个光学指纹感测元件3232位于显示像素单元3231的斜上方。从而防止光学指纹感测元件3232遮挡每个显示像素单元3231的有效显示区域(开口区)。但在其它实施例中,当光学指纹感测元件3232的面积显然小于显示像素单元3231时,光学指纹感测元件3232的位置可以更多选择,即便光学指纹感测元件3232位于开口区正上方,也基本不影响显示像素单元3231的正常显示。
需要说明的是,在将光学指纹感测元件3232设置于第一基板321上表面的前提下,其它实施例中,光学指纹感测区和光学指纹感测元件3232的布局设计可以有其它更多的形式,本发明对比不作限定。
如图4所示,点状背光源330的出光面前面具有聚光透镜340,聚光透镜340能够减小点状背光源330的光线进入保护层310的发散角,点状背光源330的光线先进入聚光透镜340,再进入保护层310。此时聚光透镜340达到提高光线利用率的功能,实现了提高图像信号强度的作用。而如果因为采用聚光透镜340,相应可以采用功率较低的点状背光源330时,那么聚光透镜340则起到了降低模组功耗的作
用。
如图4所示,保护层310下表面与点状背光源330相对的区域(这部分区域亦即保护层310下表面用于接收入射光的区域)还包括增透膜350,增透膜350能够增加点状背光源的光线进入保护层310的比例。提高光线进入保护层310的比例能够进一步提高指纹图像质量,进一步提高显示模组的指纹图像识别能力。
更多有关本实施例所提供显示模组的结构、性质和优点可参考前述实施例相应内容。
本发明另一实施例提供另一种显示模组,请参考图5。
所述显示模组包括保护层410、自发光显示面板420和点状背光源430。自发光显示面板420位于保护层410下方。自发光显示面板420具有光学指纹识别结构,能够实现光学指纹识别功能。点状背光源430位于保护层410下方,且点状背光源430位于自发光显示面板420侧边,点状背光源430发出的光线以斜向上的角度进入保护层410,所述光线如图5中斜向上的箭头所示。图5中斜向下的箭头则表示相应的反射光线。
自发光显示面板420包括第一基板421、第二基板422以及第一基板421和第二基板422之间的自发光电路层423。第一基板421为透光基板,第一基板421位于第二基板422上方;自发光电路层423包括显示区(未全部示出),所述显示区包括多个显示像素单元,如图5中显示了其中的若干显示像素单元4231。所述显示区可以包括一个或者多个光学指纹感测区。在所述光学指纹感测区,每m×n个显示像素单元中,k个显示像素单元的每一个具有至少1个光学指纹感测元件,m和n为1以上的任意一个整数,k为1至m×n的任意一个整数。如图5中显示每个显示像素单元4231均具有一个光学指纹感测元件4232。由于所述显示区包括相应的光学指纹感测区,而光学指纹感测区具有光学指纹感测元件等结构,因此,自发光显示面板420能够实现光学指纹识别功能,可参考前述实施例相应内容。
如图5所示,点状背光源430的出光面前面具有导光棱镜440,点状背光源发出的光线从点状背光源430的出光面进入导光棱镜440,再从导光棱镜440进入保护层410。
导光棱镜440在图5所示的剖面中为直角三角形(其立体形状为三棱柱形,具有未在图5中显示的端面)。其中,三角形的其中一边对应导光棱镜440的竖直侧面,竖直侧面作为导光棱镜440的入光面,光线从入光面进入导光棱镜440。三角形的斜边对应导光棱镜440的下表面,本实施例中为斜下表面。
其它实施例中,导光棱镜也可以是其他形状。
导光棱镜440与保护层410之间可以采用光学胶(未示出)粘贴。
导光棱镜440的作用与图3所示透光胶240类似,即减小点状背光源430出射光的折射,使得点状背光源430能够照射的保护层上表面面积更大,即用于获取手指指纹图像的区域更大。
如图5所示,导光棱镜440的下表面具有吸光层450,吸光层450的作用原理与图3中吸光层250的作用原理相同,即能够消除相应的杂散光。其它实施例中,如果指纹图像已经达到要求,也可以省略导光棱镜下表面的吸光层。
更多有关本实施例所提供显示模组的结构、性质和优点可参考前述实施例相应内容。
本发明另一实施例提供另一种显示模组,请参考图6。
所述显示模组包括保护层510、自发光显示面板520和点状背光源530。自发光显示面板520位于保护层510下方。自发光显示面板520具有光学指纹识别结构,能够实现光学指纹识别功能。点状背光源530位于保护层510下方,且点状背光源530位于自发光显示面板520侧边,点状背光源530发出的光线以斜向上的角度进入保护层510,所述光线如图6中斜向上的箭头所示。图6中斜向下的箭头则表示相应的反射光线。
自发光显示面板520包括第一基板521、第二基板522以及第一基板521和第二基板522之间的自发光电路层523。第一基板521为透光基板,第一基板521位于第二基板522上方;自发光电路层523包括显示区(未全部示出),所述显示区包括多个显示像素单元,如图6中显示了其中的若干显示像素单元5231。所述显示区可以包括一个或者多个光学指纹感测区。在所述光学指纹感测区,每m×n个显示像素单元中,k个显示像素单元的每一个具有至少1个光学指纹感测元件,m和n为1以上的任意一个整数,k为1至m×n的任意一个整数。如图6中显示每个显示像素单元5231均具有一个光学指纹感测元件5232。由于所述显示区包括相应的光学指纹感测区,而光学指纹感测区具有光学指纹感测元件等结构,因此,自发光显示面板520能够实现光学指纹识别功能,可参考前述实施例相应内容。
如图6所示,点状背光源530的出光面前面具有导光棱镜540,点状背光源发出的光线从点状背光源530的出光面进入导光棱镜540,再从导光棱镜540进入保护层510。
导光棱镜540减小点状背光源530出射光的折射,使得点状背光源530能够照射的保护层上表面面积更大。
如图6所示,导光棱镜540的入光面为面向背光源530的弧面,所述弧面可以为圆柱的侧面或者球面,例如图6中以圆柱侧面为例。导光棱镜540上表面为与保护层510下表面相平行的平面,导光棱镜540的下表面为连接上表面和入光面的斜面。
由于导光棱镜540的入光面为面向背光源530的弧面,因此,相比于图5的显示模组而言,图6中的显示模组中,能够利用弧面更多地汇聚光线,减小光线进入保护层510的发散角,进一步提高点状背光源530的光线利用率。
如图6所示,导光棱镜540的下表面具有吸光层550,吸光层550的作用原理也与图3中吸光层250的作用原理相同,即能够消除相应的杂散光。其它实施例中,如果指纹图像已经达到要求,也可以省略
导光棱镜下表面的吸光层。
更多有关本实施例所提供显示模组的结构、性质和优点可参考前述实施例相应内容。
本发明另一实施例提供另一种显示模组,请参考图7。
所述显示模组包括保护层610、自发光显示面板620和点状背光源630。自发光显示面板620位于保护层610下方。自发光显示面板620的至少局部具有光学指纹识别结构,能够实现光学指纹识别功能。点状背光源630位于保护层610下方,且点状背光源630位于自发光显示面板620侧边,点状背光源630发出的光线以斜向上的角度进入保护层610,所述光线如图7中斜向上的箭头所示。图7中斜向下的箭头则表示相应的反射光线。
自发光显示面板620包括第一基板621、第二基板622以及第一基板621和第二基板622之间的自发光电路层623。第一基板621为透光基板,第一基板621位于第二基板622上方;自发光电路层623包括显示区(未全部示出),所述显示区包括多个显示像素单元,如图7中显示了其中的若干显示像素单元6231。所述显示区可以包括一个或者多个光学指纹感测区。在所述光学指纹感测区,每m×n个显示像素单元中,k个显示像素单元的每一个具有至少1个光学指纹感测元件,m和n为1以上的任意一个整数,k为1至m×n的任意一个整数。如图7中显示每个显示像素单元6231均具有一个光学指纹感测元件6232。由于所述显示区包括相应的光学指纹感测区,而光学指纹感测区具有光学指纹感测元件等结构,因此,自发光显示面板620能够实现光学指纹识别功能,可参考前述实施例相应内容。
如图7所示,在点状背光源630与保护层610之间还具有透光胶640,透光胶640覆盖点状背光源630的出光面和保护层610的部分下表面,点状背光源630发出的光线从点状背光源的出光面进入透光胶640,再从透光胶640进入保护层610。
如图7所示,透光胶640下表面具有吸光层670。吸光层670的作用与图3中吸光层250的作用相同,可参考前述实施例相应内容。其它实施例中,如果指纹图像已经达到要求,也可以省略透光胶下表面的吸光层。
如图7所示,自发光显示面板620和保护层610之间还具有增厚层650。增厚层650层叠于自发光显示面板620和保护层610之间。
如图7所示,保护层610下表面具有遮光层660,遮光层660与透光胶640相邻,透光胶640除了与遮光层660相邻,还与增厚层650的侧面和部分自发光显示面板620的侧面相邻。
通过在自发光显示面板620和保护层610之间增加增厚层650,从而增加了进入保护层610的光线的入射角度范围(增厚层650的侧面也可以入射光线),从而能够使保护层610接收光线区域的宽度增大,进而能够提高显示模组采集的指纹图像质量。
通过设置遮光层660,可以防止其它光线从保护层610下表面进入保护层,进一步有助于提高模组的指纹识别性能。
图7中,点状背光源630发出的光线分两部分进入保护层610:一部分从透光胶640穿过后,再从保护层610下表面进入保护层610;另一部分则从透光胶640穿过后,进入增厚层650的侧面,在穿过增厚层650之后,再从保护层610下表面进入保护层610。
更多有关本实施例所提供显示模组的结构、性质和优点可参考前述实施例相应内容。
本发明另一实施例提供另一种显示模组,请参考图8。
所述显示模组包括保护层710、自发光显示面板720和点状背光源730。自发光显示面板720具有光学指纹识别结构,能够实现光学指纹识别功能。自发光显示面板720位于保护层710下方。点状背光源730位于保护层710下方,且点状背光源730位于自发光显示面板720侧边,点状背光源730发出的光线以斜向上的角度进入保护层
710,所述光线如图8中斜向上的箭头所示。图8中斜向下的箭头则表示相应的反射光线。
自发光显示面板720包括第一基板721、第二基板722以及第一基板721和第二基板722之间的自发光电路层723。第一基板721为透光基板,第一基板721位于第二基板722上方;自发光电路层723包括显示区(未全部示出),所述显示区包括多个显示像素单元,如图8中显示了其中的若干显示像素单元7231。所述显示区可以包括一个或者多个光学指纹感测区。在所述光学指纹感测区,每m×n个显示像素单元中,k个显示像素单元的每一个具有至少1个光学指纹感测元件,m和n为1以上的任意一个整数,k为1至m×n的任意一个整数。如图8中显示每个显示像素单元7231均具有一个光学指纹感测元件7232。由于所述显示区包括相应的光学指纹感测区,而光学指纹感测区具有光学指纹感测元件等结构,因此,自发光显示面板720能够实现光学指纹识别功能,可参考前述实施例相应内容。
点状背光源730的出光面前面具有导光棱镜740,点状背光源730发出的光线从点状背光源730的出光面进入导光棱镜740,再从导光棱镜740进入保护层710。
自发光显示面板720和保护层710之间具有增厚层750,导光棱镜740的入光面(未标注)为面向点状背光源730的斜面,导光棱镜740上表面为与保护层710下表面相平行的平面,导光棱镜740的侧面为与增厚层750侧面相平行的平面,导光棱镜740的上表面与保护层710下表面粘贴,导光棱镜740的竖直侧面与增厚层750的侧面粘贴。导光棱镜740的上表面与保护层710下表面之间可以通过光学胶粘贴。导光棱镜740的竖直侧面与增厚层750的侧面之间也可以通过光学胶粘贴。
保护层710下表面具有遮光层760,遮光层760与导光棱镜740相邻。通过遮光层760,能够充分保证点状背光源730进入保护层710的光线均是先经过导光棱镜740的,同时,遮光层760还可以减少其
它光线进入保护层。导光棱镜740的作用可参考前述实施例相应内容。
如图8所示,导光棱镜740的斜面顶部与遮光层760相邻,导光棱镜740的竖直侧面还同时与自发光显示面板720的部分侧面相邻。
图8中,点状背光源730发出的光线分两部分进入保护层710:一部分从导光棱镜740穿过后,再从保护层710下表面进入保护层710;另一部分则从导光棱镜740穿过后,进入增厚层750的侧面,在穿过增厚层750之后,再从保护层710下表面进入保护层710。
更多有关本实施例所提供显示模组的结构、性质和优点可参考前述实施例相应内容。
本发明另一实施例提供另一种显示模组,请参考图9。
所述显示模组包括保护层810、自发光显示面板820和点状背光源830。自发光显示面板820位于保护层810下方。自发光显示面板820具有光学指纹识别结构,能够实现光学指纹识别功能。点状背光源830位于保护层810下方,且点状背光源830位于自发光显示面板820侧边,点状背光源830发出的光线以斜向上的角度进入保护层810,所述光线如图9中斜向上的箭头所示。图9中斜向下的箭头则表示相应的反射光线。
自发光显示面板820包括第一基板821、第二基板822以及第一基板821和第二基板822之间的自发光电路层823。第一基板821为透光基板,第一基板821位于第二基板822上方;自发光电路层823包括显示区(未全部示出),所述显示区包括多个显示像素单元,如图9中显示了其中的若干显示像素单元8231。所述显示区可以包括一个或者多个光学指纹感测区。在所述光学指纹感测区,每m×n个显示像素单元中,k个显示像素单元的每一个具有至少1个光学指纹感测元件,m和n为1以上的任意一个整数,k为1至m×n的任意一个整数。如图9中显示每个显示像素单元8231均具有一个光学指
纹感测元件8232。由于所述显示区包括相应的光学指纹感测区,而光学指纹感测区具有光学指纹感测元件等结构,因此,自发光显示面板820能够实现光学指纹识别功能,可参考前述实施例相应内容。
点状背光源830的出光面前面具有导光棱镜840,点状背光源830发出的光线从点状背光源830的出光面进入导光棱镜840,再从导光棱镜840进入保护层810。
自发光显示面板820和保护层810之间具有增厚层850,导光棱镜840的入光面(未标注)为面向点状背光源830的弧面,导光棱镜840上表面为与保护层810下表面相平行的平面,导光棱镜840的侧面为与增厚层850侧面相平行的平面,导光棱镜840的上表面与保护层810下表面粘贴,导光棱镜840的竖直侧面与增厚层850的侧面粘贴。
由于导光棱镜840的入光面为弧面,导光棱镜840还具有汇聚光线的作用,使光线更加集中,减小入射光的进入保护层810发散角,更加有助于手指指纹的识别。
导光棱镜840的上表面与保护层810下表面之间可以通过光学胶粘贴。导光棱镜840的竖直侧面与增厚层850的侧面之间也可以通过光学胶粘贴。
保护层810下表面具有遮光层860,遮光层860与导光棱镜840相邻。通过遮光层860,能够充分保证点状背光源830进入保护层810的光线均是先经过导光棱镜840的,同时,遮光层860还可以减少其它光线进入保护层810。导光棱镜840的作用可参考前述实施例相应内容。
更多有关本实施例所提供显示模组的结构、性质和优点可参考前述实施例相应内容。
本发明另一实施例提供另一种显示模组,请参考图10。
所述显示模组包括保护层910、自发光显示面板920和点状背光
源930。自发光显示面板920位于保护层910下方。自发光显示面板920具有光学指纹识别结构,能够实现光学指纹识别功能。点状背光源930位于保护层910下方,且点状背光源930位于自发光显示面板920侧边,点状背光源930发出的光线以斜向上的角度进入保护层910,所述光线如图10中斜向上的箭头所示。图10中斜向下的箭头则表示相应的反射光线。
自发光显示面板920包括第一基板921、第二基板922以及第一基板921和第二基板922之间的自发光电路层923。第一基板921为透光基板,第一基板921位于第二基板922上方;自发光电路层923包括显示区(未全部示出),所述显示区包括多个显示像素单元,如图10中显示了其中的若干显示像素单元9231。所述显示区可以包括一个或者多个光学指纹感测区。在所述光学指纹感测区,每m×n个显示像素单元中,k个显示像素单元的每一个具有至少1个光学指纹感测元件,m和n为1以上的任意一个整数,k为1至m×n的任意一个整数。如图10中显示每个显示像素单元9231均具有一个光学指纹感测元件9232。由于所述显示区包括相应的光学指纹感测区,而光学指纹感测区具有光学指纹感测元件等结构,因此,自发光显示面板920能够实现光学指纹识别功能,可参考前述实施例相应内容。
自发光显示面板920和保护层910之间具有增厚层940。同时,保护层910下表面与点状背光源930相对的区域被遮光层950覆盖,点状背光源930发出的光线从增厚层940的侧面进入增厚层940,再从增厚层940进入保护层910。
通过遮光层950完全覆盖保护层910下表面与点状背光源930相对的区域,并控制点状背光源930的出光位置和出光角度等条件,本实施例使得进入保护层910的点状背光源930光线全部都是从增厚层940侧面进入的,此时,这些光线角度更加一致,传播路径也更加统一,有助于提高所采集的指纹图像质量,即有助于提高模组的指纹识别性能。
更多有关本实施例所提供显示模组的结构、性质和优点可参考前述实施例相应内容。
本发明另一实施例提供另一种显示模组,请参考图11。
所述显示模组包括保护层1010、自发光显示面板1020和点状背光源1030。自发光显示面板1020位于保护层1010下方。自发光显示面板1020具有光学指纹识别结构,能够实现光学指纹识别功能。点状背光源1030位于保护层1010下方,且点状背光源1030位于自发光显示面板1020侧边,点状背光源1030发出的光线以斜向上的角度进入保护层1010,所述光线如图11中斜向上的箭头所示。图11中斜向下的箭头则表示相应的反射光线。
自发光显示面板1020包括第一基板1021、第二基板1022以及第一基板1021和第二基板1022之间的自发光电路层1023。第一基板1021为透光基板,第一基板1021位于第二基板1022上方;自发光电路层1023包括显示区(未全部示出),所述显示区包括多个显示像素单元,如图11中显示了其中的若干显示像素单元10231。所述显示区可以包括一个或者多个光学指纹感测区。在所述光学指纹感测区,每m×n个显示像素单元中,k个显示像素单元的每一个具有至少1个光学指纹感测元件,m和n为1以上的任意一个整数,k为1至m×n的任意一个整数。如图11中显示每个显示像素单元10231均具有一个光学指纹感测元件10232。由于所述显示区包括相应的光学指纹感测区,而光学指纹感测区具有光学指纹感测元件等结构,因此,自发光显示面板1020能够实现光学指纹识别功能,可参考前述实施例相应内容。
自发光显示面板1020和保护层1010之间具有增厚层1040。同时,保护层1010下表面具有遮光层1050,增厚层1040与点状背光源1030相对的侧面为面向点状背光源1030的斜面,斜面顶部与所述遮光层相邻,如图11所示。在这种结构下,通过控制点状背光源1030,可以使得点状背光源1030发出的光线从增厚层1040的侧面进入增厚
层1040,再从增厚层1040进入保护层1010。
通过遮光层1050完全覆盖保护层1010下表面与点状背光源1030相对的区域,同样通过点状背光源1030的控制,保证进入保护层1010的点状背光源1030光线均是从增厚层1040侧面进入的,同样使是这些光线角度更加一致,传播路径也更加统一,有助于提高所采集的指纹图像质量,即有助于提高模组的指纹识别性能。
相对于图10实施例,图11实施例中,增厚层1040的侧面呈斜面,因此,当增厚层1040的侧斜面作为入光面时,更大角度范围的点状背光源1030的光能够通过增厚层1040的侧斜面进入保护层1010,所以可以增加入射光在保护层1010上表面的照射面积(增加指纹成像宽度),从而增加指纹成像面积。
更多有关本实施例所提供显示模组的结构、性质和优点可参考前述实施例相应内容。
本发明另一实施例提供另一种显示模组,请参考图12。与图1至图11不同的,图12是仰视示意图,即图12为了显示出保护层下方的结构,显示的是从保护层下表面向上表面方向看的示意图,这样,能够看到相应的点状背光源、自发光显示面板和保护层等结构。因此,图12所示结构的剖面结构可以参考图1至图11,反过来,图1至图11所示结构的仰视结构可以参考图12。
图12所示仰视结构中:显示模组包括保护层1110、自发光显示面板1120和点状背光源1130,保护层1110位于最下方,保护层1110上方是自发光显示面板1120,点状背光源1130同样位于保护层1110上方,并且点状背光源1130位于自发光显示面板1120侧边。
当对图12所示的仰视结构进行剖切,并且按图1至图11那样摆放时,同样可以看到本实施例所提供的显示模组中:自发光显示面板1120位于保护层1110下方;自发光显示面板1120具有光学指纹识别结构,能够实现光学指纹识别功能;点状背光源1130位于保护层
1110下方,且点状背光源1130位于自发光显示面板1120侧边,点状背光源1130发出的光线以斜向上的角度进入保护层1110。
自发光显示面板1120包括第一基板(未示出)、第二基板(未示出)以及第一基板和第二基板之间的自发光电路层(未示出)。第一基板为透光基板,第一基板位于第二基板上方;自发光电路层包括显示区,图12中标注自发光显示面板1120的矩形区域包括显示区所在区域。所述显示区包括多个显示像素单元(未示出)。所述显示区可以包括一个或者多个光学指纹感测区。在所述光学指纹感测区,每m×n个显示像素单元中,k个显示像素单元的每一个具有至少1个光学指纹感测元件,m和n为1以上的任意一个整数,k为1至m×n的任意一个整数。由于所述显示区包括相应的光学指纹感测区,而光学指纹感测区具有光学指纹感测元件等结构,因此,自发光显示面板1120能够实现光学指纹识别功能,可参考前述实施例相应内容。
如图12所示,本实施例中点状背光源1130为四个LED灯(未区分标注),四个所述LED灯均匀分布在自发光显示面板1120的同一侧边。自发光显示面板1120对应包括四个的局部光学感应区域1121。
局部光学感应区域是对所述光学指纹感测区的重新划分(不排除原划分方式,即可能存在一个局部光学感应区域对应一个所述光学指纹感测区的情况)。并且,当只有一个所述光学指纹感测区时,通常各个局部光学感应区域为所述光学指纹感测区的各个部分区域。
在图12所示平面中,采用四个相邻的虚线框显示了自发光显示面板1120的四个局部光学感应区域1121,即本实施例将所述光学指纹感测区划分为四个局部光学感应区域1121。一个LED灯对应一个局部光学感应区域1121。同时,图12中虽未显示,但是,显示模组还包括触控结构,所述触控结构包括四个的局部触控区域,一个局部光学感应区域1121对应一个局部触控区域(同时,一个局部触控区域也对应一个局部光学感应区域1121)。在图12所示的仰视平面内,
如果局部触控区域进行显示,则相应的局部触控区域和局部光学感应区域1121完全重合。
通过上述结构,本实施例所提供的显示模组中,可以利用一个LED灯作为一个局部光学感应区域1121的光源,同时,利用相应的局部触控区域判断手指是接触在具体哪个局部触控区域,进而控制相应的局部光学感应区域1121和LED灯进行工作,实现对手指指纹图像的采集。这种方式中,由于每次只使用其中的某一个LED灯及某一个局部光学感应区域1121,因此,不需要同时使用全部LED灯,也不需要整个自发光显示面板1120都进行指纹采集,不仅提高了指纹图像的采集速度,而且减小功耗。
需要说明的是,上述触控结构可以是电容式触控结构,电容式触控结构可以是位于保护层与自发光显示面板之间(例如贴合或制作在保护层下表面,又例如贴合或者制作在自发光显示面板上表面),电容式触控结构也可以是集成在自发光显示面板内部。
其它实施例中,点状背光源也可以是两个、三个或者五个以上LED灯,这些LED灯均匀分布在自发光显示面板1120的同一侧边。相应的,局部光学感应区域和局部触控区域的个数均与LED灯的个数相等,并且具体的对应方式也是一一对应。可参考上述相应内容。
其他实施例中,每个局部光学感应区域也可以对应于多个局部触控区域,从而提高检测手指按压的位置的精度,提高定位手指按压的准确度。
本发明另一实施例提供另一种显示模组,请参考图13。与图1至图11不同的,图13是仰视示意图,即图13为了显示出保护层下方的结构,显示的是从保护层下表面向上表面方向看的示意图,这样,能够看到相应的点状背光源、自发光显示面板和保护层等结构。因此,图13所示结构的剖面结构可以参考图1至图11,反过来,图1至图11所示结构的仰视结构可以参考图13。
图13所示仰视结构中:显示模组包括保护层1210、自发光显示面板1220和点状背光源(点状背光源未单独标注,点状背光源包括后续六个LED灯),保护层1210位于最下方,保护层1210上方是自发光显示面板1220,所述点状背光源同样位于保护层1210上方,并且所述点状背光源位于自发光显示面板1220侧边。
当对图13所示的仰视结构进行剖切,并且按图1至图11那样摆放时,同样可以看到本实施例所提供的显示模组中:自发光显示面板1220位于保护层1210下方;自发光显示面板1220具有光学指纹识别结构,能够实现光学指纹识别功能;所述点状背光源位于保护层1210下方,且所述点状背光源位于自发光显示面板1220侧边,所述点状背光源发出的光线以斜向上的角度进入保护层1210。
自发光显示面板1220包括第一基板(未示出)、第二基板(未示出)以及第一基板和第二基板之间的自发光电路层(未示出)。第一基板为透光基板,第一基板位于第二基板上方;自发光电路层包括显示区,图13中标注自发光显示面板1220的矩形区域包括显示区所在区域。所述显示区包括多个显示像素单元(未示出)。所述显示区可以包括一个或者多个光学指纹感测区。在所述光学指纹感测区,每m×n个显示像素单元中,k个显示像素单元的每一个具有至少1个光学指纹感测元件,m和n为1以上的任意一个整数,k为1至m×n的任意一个整数。由于所述显示区包括相应的光学指纹感测区,而光学指纹感测区具有光学指纹感测元件等结构,因此,自发光显示面板1220能够实现光学指纹识别功能,可参考前述实施例相应内容。
如图13所示,本实施例中所述点状背光源为六个LED灯,分别为LED灯a、LED灯b、LED灯c、LED灯d、LED灯e和LED灯f,六个LED灯均匀分布在自发光显示面板1220的同一侧边。
而自发光显示面板1220对应包括十四个局部光学感应区域,分别为局部光学感应区域1-14。在图13所示平面中,采用十四个相邻的虚线框将自发光显示面板1220的所述光学指纹感测区分为十四个
局部光学感应区域。一个LED灯对应四个局部光学感应区域。
与图12相同的,图13中,局部光学感应区域是对所述光学指纹感测区的重新划分(不排除原划分方式,即可能存在一个局部光学感应区域对应一个所述光学指纹感测区的情况)。并且,当只有一个所述光学指纹感测区时,通常各个局部光学感应区域为所述光学指纹感测区的各个部分区域。
在图13所示平面中,采用十三条虚线将自发光显示面板1220的所述光学指纹感测区分为十四个局部光学感应区域。一个LED灯对应四个局部光学感应区域。同时,图13中虽未显示,但是,显示模组还包括触控结构,所述触控结构包括十四个的局部触控区域,一个局部光学感应区域对应一个局部触控区域,即局部光学感应区域和局部触控区域一一对应。在图13所示的仰视平面内,如果局部触控区域进行显示,则相应的局部触控区域和局部光学感应区域完全重合。利用局部触控区域可以控制对应局部光学感应区域的工作状态(例如工作与非工作的两种状态的切换),可参考前述实施例相应内容。通过上述结构,本实施例所提供的显示模组中,LED灯数目少于所述局部光学感应区域的数目,多个局部光学感应区域对应一个LED灯,每一个所述LED灯对应多个相邻的局部光学感应区域,且相邻的两个所述LED灯对应的所述局部光学感应区域部分相同。
具体的,本实施例中,LED灯a对应局部光学感应区域1-4,LED灯b对应局部光学感应区域3-6,LED灯c对应局部光学感应区域5-8,LED灯d对应局部光学感应区域7-10,LED灯e对应局部光学感应区域9-12,LED灯f对应局部光学感应区域11-14。LED灯a至LED灯f对应区域的宽度如图13中Ra至Rf所示,这些宽度可以证明上述LED灯与局部光学感应区域的对应关系,即一个LED灯对应连续的四个局部光学感应区域。此时,以相邻的LED灯a和LED灯b为例,它们对应的所述局部光学感应区域部分相同,即它们都对应局部光学感应区域3-4。同时,“部分相同”说明它们各自还对应不同的
局部光学感应区域,例如LED灯a对应局部光学感应区域1-2,LED灯b对应局部光学感应区域5-6。
本实施例之所以进而上述结构和区域的对应设置,是因为由本发明的成像原理可知:显示模组在指纹成像时,每次只能使用一个LED灯发光(如果同时使用两个LED灯则会有干扰,使图像变模糊);而如果相邻两个LED灯对应的所述局部光学感应区域不存在部分相同时,如果手指按压在两个局部光学感应区域的分界处时,则通常需要进行两次成像,获得不同的局部指纹图像,再将它们合成在一起。但是,本实施例通过设置较多个LED灯,从而减小LED灯间的距离。同时,通过进一步细分局部光学感应区域,增加局部光学感应区域的数目,从而达到:多个相邻的局部光学感应区域对应一个LED灯,且相邻的两个所述LED灯对应的所述局部光学感应区域部分相同。此时,根据手指按压位置,每次只需要打开与手指按压位置最接近的LED灯进行指纹图像采集,并且总能利用最合适的某一个LED灯进而指纹图像采集,因此,能够实现一次成像就能采集到相应的指纹图像。因此,进一步提高了采集效率和采集效果。
为了更好地实现上述目的,还可以使LED灯之间的间距远小于手指的按压覆盖宽度(例如可以使LED灯的间距小于5mm)。
更多有关本实施例所提供显示模组的结构、性质和优点可参考前述实施例相应内容。
本说明书各实施例多有可以相互替换和相互补充之处。虽然本发明披露如上,但本发明并非限定于此。任何本领域技术人员,在不脱离本发明的精神和范围内,均可作各种更动与修改,因此本发明的保护范围应当以权利要求所限定的范围为准。
Claims (25)
- 一种显示模组,包括:保护层;自发光显示面板,所述自发光显示面板位于所述保护层下方;其特征在于,所述自发光显示面板的至少局部具有光学指纹识别结构,能够实现光学指纹识别功能;所述显示模组还包括:点状背光源,所述点状背光源位于所述保护层下方且位于所述自发光显示面板侧边,所述点状背光源发出的光线以斜向上的角度进入所述保护层。
- 如权利要求1所述的显示模组,其特征在于,所述自发光显示面板包括第一基板、第二基板以及第一基板和第二基板之间的自发光电路层;所述第一基板为透光基板,所述第一基板位于所述第二基板上方;所述自发光电路层包括显示区,所述显示区包括多个显示像素单元;所述显示区包括一个或者多个光学指纹感测区;在所述光学指纹感测区,每m×n个所述显示像素单元中,k个所述显示像素单元的每一个具有至少1个光学指纹感测元件,m和n为1以上的任意一个整数,k为1至m×n的任意一个整数。
- 如权利要求2所述的显示模组,其特征在于,所述光学指纹感测元件位于所述第二基板上表面,或者位于所述第一基板下表面。
- 如权利要求1所述的显示模组,其特征在于,所述自发光显示面板包括第一基板、第二基板以及第一基板和第二基板之间的自发光电路层;所述第一基板为透光基板,所 述第一基板位于所述第二基板上方;所述自发光电路层包括显示区,所述显示区包括多个显示像素单元;所述第一基板上表面包括位于所述显示区上方的一个或者多个光学指纹感测区;所述光学指纹感测区具有光学指纹感测元件。
- 如权利要求4所述的显示模组,其特征在于,在所述光学指纹感测区,每m×n个所述显示像素单元上方的区域中,k个所述显示像素单元的每一个上方具有至少1个光学指纹感测元件,m和n为1以上的任意一个整数,k为1至m×n的任意一个整数。
- 如权利要求5所述的显示模组,其特征在于,所述光学指纹感测元件位于所述显示像素单元的斜上方。
- 如权利要求1所述的显示模组,其特征在于,所述点状背光源与所述保护层之间具有透光胶,所述透光胶覆盖所述点状背光源的出光面和所述保护层的部分下表面,所述点状背光源发出的光线从所述点状背光源的出光面进入所述透光胶,再从所述透光胶进入所述保护层。
- 如权利要求7所述的显示模组,其特征在于,所述透光胶的至少部分下表面有吸光层。
- 如权利要求7所述的显示模组,其特征在于,所述自发光显示面板和所述保护层之间具有增厚层,所述保护层下表面具有遮光层,所述遮光层与所述透光胶相邻。
- 如权利要求1所述的显示模组,其特征在于,所述点状背光源的出光面前面具有聚光透镜,所述聚光透镜能够减小所述点状背光源的光线进入所述保护层的发散角,所述点状背光源的光线先进入所述聚光透镜,再进入所述保护层。
- 如权利要求10所述的显示模组,其特征在于,所述 保护层下表面与所述点状背光源相对的区域还包括增透膜,所述增透膜能够增加所述点状背光源的光线进入所述保护层的比例。
- 如权利要求1所述的显示模组,其特征在于,所述点状背光源的出光面前面具有导光棱镜,所述点状背光源发出的光线从所述点状背光源的出光面进入所述导光棱镜,再从所述导光棱镜进入所述保护层。
- 如权利要求12所述的显示模组,其特征在于,所述导光棱镜的入光面为面向所述点状背光源的弧面,所述导光棱镜上表面为与所述保护层下表面相平行的平面,所述导光棱镜的下表面为连接上表面和入光面的斜面。
- 如权利要求12所述的显示模组,其特征在于,所述自发光显示面板和所述保护层之间具有增厚层,所述导光棱镜的入光面为面向所述点状背光源的斜面,所述导光棱镜上表面为与所述保护层下表面相平行的平面,所述导光棱镜的侧面为与所述增厚层侧面相平行的平面,所述导光棱镜的上表面与所述保护层下表面粘贴,所述导光棱镜的竖直侧面与所述增厚层的侧面粘贴。
- 如权利要求12所述的显示模组,其特征在于,所述自发光显示面板和所述保护层之间具有增厚层,所述导光棱镜的入光面为面向所述点状背光源的弧面,所述导光棱镜上表面为与所述保护层下表面相平行的平面,所述导光棱镜的侧面为与所述增厚层侧面相平行的平面,所述导光棱镜的上表面与所述保护层下表面粘贴,所述导光棱镜的侧面与所述增厚层的侧面粘贴。
- 如权利要求12所述的显示模组,其特征在于,所述导光棱镜的下表面具有吸光层。
- 如权利要求16所述的显示模组,其特征在于,所述 保护层下表面具有遮光层,所述遮光层与所述导光棱镜相邻。
- 如权利要求1所述的显示模组,其特征在于,所述自发光显示面板和所述保护层之间具有增厚层。
- 如权利要求18所述的显示模组,其特征在于,所述保护层下表面与所述点状背光源相对的区域被遮光层覆盖,所述点状背光源发出的光线从所述增厚层的侧面进入所述增厚层,再从所述增厚层进入所述保护层。
- 如权利要求19所述的显示模组,其特征在于,所述保护层下表面具有遮光层,所述增厚层与所述点状背光源相对的侧面为面向所述点状背光源的斜面,斜面顶部与所述遮光层相邻,所述点状背光源发出的光线从所述增厚层的斜面进入所述增厚层,再从所述增厚层进入所述保护层。
- 如权利要求1至20任意一项所述的显示模组,其特征在于,所述点状背光源为一个LED灯;或者,所述点状背光源为两个以上LED灯。
- 如权利要求1至20任意一项所述的显示模组,其特征在于,所述点状背光源为两个以上LED灯,所述两个以上LED灯均匀分布在所述自发光显示面板的同一侧边。
- 如权利要求22所述的显示模组,其特征在于,所述自发光显示面板包括两个以上的局部光学感应区域,一个所述LED灯对应一个所述局部光学感应区域;所述显示模组还包括触控结构,所述触控结构包括两个以上的局部触控区域,一个所述局部光学感应区域对应一个所述局部触控区域。
- 如权利要求22所述的显示模组,其特征在于,所述自发光显示面板包括三个以上的局部光学感应区域,所述 LED灯数目少于所述局部光学感应区域的数目;所述显示模组还包括触控结构,所述触控结构包括三个以上的局部触控区域,一个所述局部光学感应区域对应一个所述局部触控区域。
- 如权利要求24所述的显示模组,其特征在于,每一个所述LED灯对应多个相邻的所述局部光学感应区域;且相邻的两个所述LED灯对应的所述局部光学感应区域部分相同。
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