TWI822035B - Optical fingerprint recognition device - Google Patents

Abstract

An optical fingerprint recognition device includes a light-emitting layer and a color filter layer. The light-emitting layer has a plurality of red OLEDs, a plurality of green OLEDs and a plurality of blue OLEDs. An opaque pixel define layer is arranged between two adjacent OLEDs, and the pixel define layer is provided with an opening. The color filter layer has a plurality of red filters, a plurality of green filters and a plurality of blue filters. The red filters respectively correspond to the red OLEDs in position, the green filters respectively correspond to the green OLEDs in position, and the blue filters respectively correspond to the blue OLEDs in position. A black matrix corresponding to the pixel define layer is filled between two adjacent filters respectively corresponding to two adjacent OLEDs.

Description

Optical fingerprint recognition device

The present invention relates to an optical fingerprint display device, and in particular, to an optical fingerprint recognition device that can improve the transmittance of a panel and eliminate ambient light interference at the same time.

A polarizer layer is used inside a traditional organic light-emitting diode (OLED) panel to eliminate visual interference caused by ambient light. As shown in Figure 1, when external ambient light 10 passes through the protective glass 15 and is incident on the interior of the panel. When between two adjacent organic light-emitting diodes 17, reflected light will be generated due to encountering the metal material of the thin film transistor layer 11 in the panel, which may cause interference to human eyes. Therefore, traditional OLED panels will be equipped with There is a polarizing layer 13 to eliminate the reflected light caused by the ambient light 10 incident on the metal material in the panel. However, the arrangement of the polarizing layer 13 prevents the thickness of the panel from being reduced, which is not conducive to thinning the product.

Therefore, it is possible to use a color filter layer to replace the polarizer layer in the OLED panel to avoid the disadvantage that the thickness of the panel cannot be reduced. However, using a photoresist layer to replace the polarizing layer can reduce the thickness of the panel. However, it also completely blocks the penetration characteristics of the OLED panel, making it difficult to adopt optical fingerprint recognition devices developed within or under the screen.

Therefore, there are still many defects in the design of conventional optical fingerprint recognition devices, which need to be improved.

The main purpose of the present invention is to provide an optical fingerprint recognition device. By only providing openings in the pixel definition layer without opening holes in the black matrix of the photoresist layer, it can ensure that the ambient light incident on the panel can still be eliminated and the OLED When the signal light emitted by the luminescent layer of the panel hits the finger and is reflected, it can still pass through the panel and return to the photosensitive element, so that fingerprint recognition can be performed correctly.

In order to achieve the aforementioned objectives, the optical fingerprint identification device of the present invention includes: a substrate; a thin film transistor layer disposed on the substrate; a luminescent layer disposed on the thin film transistor layer, the luminescent layer having a plurality of red Organic light-emitting diodes, a plurality of green organic light-emitting diodes and a plurality of blue organic light-emitting diodes, and the light-emitting layer is configured to provide a plurality of pixels, each pixel including a red organic light-emitting diode arranged adjacently , a green organic light-emitting diode and a blue organic light-emitting diode, an opaque pixel definition layer is provided between two adjacent organic light-emitting diodes, and the pixel definition layer is provided with a first opening ; A filter layer, disposed above the luminescent layer, and including a plurality of red filters, a plurality of green filters and a plurality of blue filters, the plurality of red filters respectively corresponding to the plurality of Red organic light-emitting diodes are arranged, the plurality of green filters respectively correspond to the plurality of green organic light-emitting diodes, and the plurality of blue filters respectively correspond to the plurality of blue organic light-emitting diodes. A black matrix corresponding to the pixel definition layer is disposed between two adjacent filters; and a protective glass is disposed on the filter layer.

The above summary and the following detailed description are exemplary in nature and are intended to further illustrate the patentable scope of the present invention. Other objects and advantages of the present invention will be explained in the subsequent description and drawings.

10:Ambient light

11:Thin film transistor layer

13:Polarizing layer

15:Protective glass

17: Organic light emitting diode

20: Optical fingerprint recognition device

21:Substrate

22:Thin film transistor layer

23: Luminous layer

231,231-R,231-G,231-B,2311,2312: organic light emitting diode

233: Pixel definition layer

235,2351,2352: opening

24:Filling layer

25:Filter layer

251,251-R,251-G,251-B,2511,2512: Optical filter

253:Black Matrix

26:Protective glass

29:Finger

31:pixel

40-A, 40-B, 40-C, 40-D: ambient light

51:Light sensor

53:Light sensing unit

61,61-R,61-G,61-B: Photoresist

Figure 1 shows a schematic diagram of a traditional organic light-emitting diode panel using a polarizer layer to eliminate visual interference caused by ambient light.

FIG. 2 shows a schematic diagram of an embodiment of the optical fingerprint recognition device of the present invention.

Figure 3 shows a schematic configuration diagram of the optical fingerprint identification device of the present invention.

FIG. 4 shows a schematic diagram of the optical fingerprint recognition device of the present invention absorbing ambient light in various paths.

FIG. 5A shows an under-screen optical fingerprint recognition device composed of the present invention.

FIG. 5B shows an in-screen optical fingerprint recognition device composed of the present invention.

FIG. 6A shows an example of filling photoresist in the openings of the light-emitting layer of the optical fingerprint identification device of the present invention.

FIG. 6B shows that the optical fingerprint identification device of the present invention provides the function of identifying false fingerprints.

FIG. 7 shows a schematic diagram of another embodiment of the optical fingerprint recognition device of the present invention.

In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the implementation of the present invention and are not intended to limit the present invention.

FIG. 2 shows a schematic diagram of an embodiment of an optical fingerprint identification device of the present invention. The optical fingerprint identification device 20 of this embodiment is disposed in a panel and includes a substrate 21 and a thin film transistor (TFT). layer 22, a luminescent layer 23, A leveling layer 24 , a filter layer 25 , and a protective glass 26 . Among them, the thin film transistor layer 22 is disposed on the substrate 21; the luminescent layer 23 is disposed on the thin film transistor layer 22. The luminescent layer 23 has a plurality of organic light-emitting diodes 231 arranged at intervals, and two adjacent organic light-emitting diodes 231 There is a Pixel Define Layer (PDL) 233 between the two adjacent organic light-emitting diodes 231 , preferably made of an opaque material, and the pixel definition layer 233 between two adjacent organic light-emitting diodes 231 has at least one opening 235 , the minimum size of the opening 235 needs to be greater than 2 μm; the filling layer 24 is provided on the substrate 21 and covers the light-emitting layer 23 and the pixel definition layer 233; the filter layer 25 is provided on the filling layer 24, and the filter layer 25 has multiple There are two optical filters 251 arranged at intervals. The space between the two optical filters 251 is filled with a black matrix (Black Matrix, BM) 253. The positions of the multiple optical filters 251 respectively correspond to the multiple organic light-emitting diodes of the light-emitting layer 23. 231, and the position of the black matrix 253 also corresponds to the pixel definition layer 235; the protective glass 26 is provided on the filter layer 25 for contact and pressing by the finger 29 for fingerprint recognition.

In the embodiment of the optical fingerprint recognition device in Figure 2, the light-emitting layer 23 has a plurality of red organic light-emitting diodes 231-R, a plurality of green organic light-emitting diodes 231-G and a plurality of blue organic light-emitting diodes. Body 231-B, please also refer to the schematic configuration diagram of the optical fingerprint recognition device 20 shown in FIG. 3. The light-emitting layer 23 is configured to provide a plurality of pixels 31 arranged in, for example, a matrix form. Each pixel 31 includes a red organic layer adjacently arranged. The light-emitting diode 231-R, a green organic light-emitting diode 231-G and a blue organic light-emitting diode 231-B, and as shown in Figure 2, the gap between two adjacent organic light-emitting diodes 231 The pixel definition layer 233 has a first opening 2351. Correspondingly, the filter layer 25 has a plurality of red filters 251-R, a plurality of green filters 251-G and a plurality of blue filters 251-B. The plurality of red filters 251-R are The positions correspond to a plurality of red organic light-emitting diodes 231-R and a plurality of green filters 251-G respectively. The positions correspond to a plurality of green organic light-emitting diodes 231-G and a plurality of blue filters 251 respectively. -B corresponds to the majority in position There are two blue organic light-emitting diodes 231-B. Therefore, between the two adjacent filters 251 corresponding to the two adjacent organic light-emitting diodes 231 is a black matrix 253 filled with the corresponding pixel definition layer 233. , it should be noted that the size ratio and relationship of the organic light-emitting diode 231, the optical filter 251 and the black matrix 253 shown in Figure 3 are only to clearly show the configuration of the optical fingerprint recognition device 20, and are not the actual sizes. Proportions and relationships.

Please refer to FIG. 2 again, for two adjacent first organic light-emitting diodes 2311 (for example, red organic light-emitting diodes 231-R) and second organic light-emitting diodes 2312 (for example, green organic light-emitting diodes). The polar body 231-G) and the corresponding two adjacent first optical filters 2511 (for example, the red filter 251-R) and the second optical filter 2512 (for example, the green filter 251-G) are located at The edge of the black matrix 253 between the first filter 2511 and the second filter 2512 and adjacent to the first filter 2511 is substantially aligned with the first organic light emitting diode 2311 and the corresponding pixel definition layer 233 The adjacent edge and the first organic light-emitting diode 2311 (red organic light-emitting diode 231-R) and the second organic light-emitting diode 2312 (green organic light-emitting diode 231-G) The distance between the center of the opening 2351 and the first organic light-emitting diode 2311 (red organic light-emitting diode 231-R) is less than L/2, where L is the first organic light-emitting diode 2311 (red organic light-emitting diode 231-R). 231-R) and the second organic light-emitting diode 2312 (green organic light-emitting diode 231-G), that is, compared with the second organic light-emitting diode 2312 (green organic light-emitting diode 231-G) body 231-G), the first opening 2351 is relatively close to the first organic light-emitting diode 2311 (red organic light-emitting diode 231-R). Similarly, for the other two adjacent organic light-emitting diodes 231, for example The positions and configurations of the adjacent green organic light-emitting diodes 231-G and blue organic light-emitting diodes 231-B can be known by referring to the foregoing description, and therefore will not be described again.

With the structure of the above optical fingerprint recognition device, since the black matrix 253 is filled between two adjacent filters 251, the filter layer 25 does not have any openings, and the black matrix The edge of the matrix 253 adjacent to the first filter 2511 is substantially aligned with the edge of the corresponding first organic light-emitting diode 2311 adjacent to the pixel definition layer 233, and compared with the green organic light-emitting diode 231-G. , the position of the first opening 2351 is closer to the red organic light-emitting diode 231-R, compared to the blue organic light-emitting diode 231-B), the position of the first opening 2351 is closer to the green organic light-emitting diode 231-G, therefore, ambient light in various paths can be absorbed. For example, as shown in Figure 4, ambient light 40-A incident from outside the panel to the black matrix 253 of the filter layer 25 will be directly absorbed by the black matrix 253. Absorption; for the ambient light 40-B that is incident from outside the panel and passes through the filter 251 and then passes through the opening 235 of the pixel definition layer 233 and hits the metal material on the thin film transistor layer 22 and is reflected, based on the incident angle being equal to the reflection angle According to the principle of light reflection, this reflected ambient light 40-B can be absorbed by the opaque pixel definition layer 233 in the non-hole area, or by the black matrix filled between two adjacent filters 251 253, so it will not cause interference; for the ambient light 40-C that is incident from outside the panel and passes through the filter 251 and then hits the metal material at the bottom of the organic light-emitting diode 231 of the light-emitting layer 23 and is reflected. The ambient light 40-C can be absorbed by the black matrix 253 filled between two adjacent filters 251; for light incident from outside the panel at a small angle and just passing through the filter 251 and the pixel definition layer 233 After opening the hole 235, the ambient light 40-D is incident on the metal material of the thin film transistor layer 22 and is reflected. Due to the small incident angle, the ambient light 40-B reflected by the metal material will be reflected in a nearly vertical direction, and It will be absorbed by the black matrix 253 of the filter layer 25 and can effectively prevent interference caused by ambient light.

In addition, please refer to the embodiment of the optical fingerprint recognition device shown in FIG. 2 again. The edge of the black matrix 253 located between the first optical filter 2511 and the second optical filter 2512 adjacent to the second optical filter 2512 is also approximately The top is aligned with the edge of the second organic light emitting diode 2312 adjacent to the corresponding pixel definition layer 233 . Further, in Figure 2, the protective glass 26, the filter layer 25 and the light-emitting layer 23 are configured to comply with the equation: tanθ1=b1/a1, and θ1 is 3°~7°, where a1 is the vertical distance from the center of the first organic light-emitting diode 2311 through the first filter 2511 to the upper surface of the protective glass 26, for example, 510 μm~515 μm, and b1 is the distance from the first organic light-emitting diode 2311 to the upper surface of the protective glass 26. The distance from the center of an organic light-emitting body 2311 to the center of the first opening 2351 is, for example, 30 μm to 60 μm. This structure can optimize the effect of preventing interference caused by ambient light.

In addition, as shown in FIG. 5A , the optical fingerprint identification device of the present invention has at least one light sensor 51 , and the light sensor 51 is disposed below the substrate 21 to form an under-screen optical fingerprint identification device. The under-screen optical fingerprint identification device The signal light source path required by the identification device is shown by the dotted arrow in Figure 5A. After the organic light-emitting diode 231 of the light-emitting layer 23 emits the signal light, it is incident on the surface of the finger 29 above the protective glass 26 through the filter 251, causing reflection or Diffusion, the signal light reflected or diffused by the finger 29 will then pass through the filter 251, and then pass through the first opening 2351 of the pixel definition layer 233, because the metal circuit distribution of the thin film transistor layer 22 has penetration gaps. , so that the signal light can be transmitted to the photo sensor 51 below, where the minimum opening size on the pixel definition layer 233 needs to be larger than 2 μm to avoid severe diffraction effects. Furthermore, FIG. 5B shows that the optical fingerprint identification device of the present invention has a plurality of light sensing units 53, and the plurality of light sensing units 53 are disposed in the thin film transistor layer 22 and are respectively located in a plurality of pixel definition layers 233 of the light emitting layer 23. An in-screen optical fingerprint identification device is formed below the first opening 2351. The signal light source path required by the in-screen optical fingerprint identification device is shown as a dotted line in Figure 5B. The organic light-emitting diode 231 of the light-emitting layer 23 emits signal light. Afterwards, the surface of the finger 29 incident on the protective glass 26 through the filter 251 is reflected or diffused. The signal light reflected or diffused by the finger 29 will pass through the filter 251 and then pass through the pixel definition layer 233 The first opening 2351 is incident on the light sensing unit 53, where the minimum opening size on the pixel definition layer 233 needs to be greater than 2 μm to avoid severe diffraction effects. In the above embodiments, the light sensing unit may be a thin film transistor (TFT), PIN diode, CMOS or other similar electronic components.

Furthermore, as shown in FIG. 6A, in the light-emitting layer 23 of the optical fingerprint recognition device 20 of the present invention, the adjacent first organic light-emitting diode 2311 (red organic light-emitting diode 231-R) and the second organic light-emitting diode 231-R are adjacent to each other. The first opening 2351 in the pixel definition layer 233 between the light-emitting diodes 2312 (green organic light-emitting diode 231-G) is filled with the photoresist 61 having the same wavelength band as the first filter 2511 (that is, , the red photoresist 61-R), therefore, can effectively block the crosstalk noise generated from other adjacent organic light-emitting diodes (such as the green organic light-emitting diode 231-G); similarly, for the other two adjacent organic light-emitting diodes, The organic light-emitting diode 231, such as the adjacent green organic light-emitting diode 231-G and the blue organic light-emitting diode 231-B, the first opening 2351 in the pixel definition layer 233 between them is filled with The second optical filter 2511 has a photoresist 61 of the same wavelength band (ie, a green photoresist 61 -G) to block crosstalk noise generated from the adjacent blue organic light emitting diode 231 -B.

6B illustrates the application of the structure of FIG. 6A to an in-screen optical fingerprint identification device to provide the function of identifying fake fingerprints. As shown in the figure, the photoresist 61 is filled in the opening 235 in the above configuration, because the fake fingerprint is different from the real fingerprint. The colors of fingerprints are different, and real fingerprints also have epidermal and dermal structures, so that the signal intensity sensed by the light sensing unit 53 corresponding to the opening 235 of the blue photoresist, green photoresist, and red photoresist filled in the fake fingerprint is proportional to The signal intensity ratio of real fingerprints will be different. Therefore, by filling in the blue photoresist, green photoresist, and red photoresist, the signal intensity ratio sensed by the light sensing unit 53 corresponding to the opening 235 can be determined. The sensed fingerprint is a real fingerprint or a fake fingerprint. For example, when the fake fingerprint is redder, the signal intensity sensed by the light sensing unit 53 corresponding to the opening 235 filled with red photoresist will be stronger, and the signal intensity sensed by the light sensing unit 53 corresponding to the opening 235 filled with other color photoresist will be The signal intensity sensed by the light sensing unit 53 will be smaller, based on which the fake fingerprint can be determined.

Figure 7 shows a schematic diagram of another embodiment of the optical fingerprint identification device of the present invention. The optical fingerprint identification device of this embodiment is similar to the previous embodiment, except that, In addition to being provided with the first opening 2351, the two adjacent first organic light-emitting diodes 2311 (red organic light-emitting diode 231-R) and the second organic light-emitting diode 2312 (green organic light-emitting diode 2312) of the light-emitting layer 23 The pixel definition layer 233 between the diodes 231-G) is further provided with a second opening 2352. The center of the second opening 2352 is connected to the second organic light-emitting diode 2312 (green organic light-emitting diode 231-G). The distance is less than L/2, where L is the first organic light-emitting diode 2311 (red organic light-emitting diode 231-R) and the second organic light-emitting diode 2312 (green organic light-emitting diode 231-G) The distance between them, that is, compared to the first organic light-emitting diode 2311 (red organic light-emitting diode 231-R), the second opening 2352 is closer to the second organic light-emitting diode 2312 (green organic light-emitting diode 231-R). Diode 231-G), and the protective glass 26, the filter layer 25 and the luminescent layer 23 are configured to comply with the equation: tanθ2=b2/a2, and θ2 is 3°~7°, where a2 is the second organic light emitting The vertical distance from the center of the diode 2312 through the second filter 2512 to the upper surface of the protective glass 26 is, for example, 510 μm ~ 515 μm, and b2 is the distance from the center of the second organic light-emitting body 2312 to the center of the second opening 2352 , for example, 30μm~60μm. In this way, since the number of openings 235 per unit area can be increased by 2 times, the transmittance is also increased by 2 times. Similarly, for other two adjacent organic light-emitting diodes 231, such as adjacent green ones, The pixel definition layer 233 between the organic light-emitting diode 231-G and the blue organic light-emitting diode 231-B is also provided with two openings 2351 and 2352, and their position and configuration can be known by referring to the above description, so there is no need to Again.

Similarly, the pixels between the aforementioned adjacent first organic light-emitting diode 2311 (red organic light-emitting diode 231-R) and second organic light-emitting diode 2312 (green organic light-emitting diode 231-G) The second opening 2352 in the definition layer 233 can also be filled with the photoresist 61 having the same wavelength band as the second filter 2512 (that is, the green photoresist 61-G). For the other two adjacent organic light-emitting diodes, body 231, such as the adjacent green organic light-emitting diode 231-G and the blue organic light-emitting diode 231-B, and the second opening in the pixel definition layer 233 between them 2352 is filled with photoresist 61 having the same wavelength band as blue filter 251-B (that is, blue photoresist 61-B) to effectively block crosstalk noise and discrimination generated from other nearby organic light-emitting objects. The effect of fake fingerprints, and in this embodiment, a photo sensor can also be disposed under the substrate 21 to form an under-screen optical fingerprint identification device, or a plurality of photo sensing units can be disposed in the thin film transistor layer 22 And are respectively located under the plurality of first openings 2351 and the second openings 2352 of the light-emitting layer 23 to form an in-screen optical fingerprint recognition device. The implementation method and the effect produced are the same as the previous embodiment, so no further Repeat.

From the above description, it can be seen that the present invention only needs to make openings in the pixel definition layer instead of opening holes in the black matrix of the photoresist layer, so it can maintain the function of the black matrix in blocking ambient light and at the same time improve the panel transmittance. , and the position design of the openings in the pixel definition layer and the position of the filter can allow the signal light to be incident obliquely and exhibit a collimation effect, effectively improving the fingerprint contrast. In addition, by filling in the openings in the pixel definition layer The design of the photoresist allows each light sensing unit or specific position of the light sensor to only receive signals of a fixed waveband, and can also realize the function of judging true and false fingerprints.

The above-mentioned embodiments are only examples for convenience of explanation. The scope of rights claimed by the present invention shall be subject to the scope of the patent application and shall not be limited to the above-mentioned embodiments.

20: Optical fingerprint recognition device

21:Substrate

22:Thin film transistor layer

23: Luminous layer

231,231-R,231-G,231-B,2311,2312: organic light emitting diode

233: Pixel definition layer

235,2351: opening

24:Filling layer

25:Filter layer

251,251-R,251-G,251-B,2511,2512: Optical filter

253:Black Matrix

26:Protective glass

29:Finger

Claims (13)

An optical fingerprint identification device, including: a substrate; a thin film transistor layer disposed on the substrate; a luminescent layer disposed on the thin film transistor layer, the luminescent layer having a plurality of red organic light-emitting diodes, a plurality of A green organic light-emitting diode and a plurality of blue organic light-emitting diodes, and the light-emitting layer is configured to provide a plurality of pixels. Each pixel includes a red organic light-emitting diode and a green organic light-emitting diode that are adjacently arranged. body and a blue organic light-emitting diode, a pixel definition layer is provided between two adjacent organic light-emitting diodes, and the pixel definition layer is provided with a first opening; a filter layer is provided on the light-emitting layer above, and includes a plurality of red filters, a plurality of green filters and a plurality of blue filters. The plurality of red filters respectively correspond to the plurality of red organic light-emitting diodes. The plurality of The green filters are respectively arranged corresponding to the plurality of green organic light-emitting diodes, the plurality of blue filters are respectively arranged corresponding to the plurality of blue organic light-emitting diodes, and the distance between the two adjacent filters is There is a black matrix corresponding to the pixel definition layer; a light sensing device disposed under the luminescent layer for fingerprint recognition; and a protective glass disposed on the filter layer. The optical fingerprint identification device according to claim 1, wherein the center of the first opening between two adjacent first organic light-emitting diodes and the second organic light-emitting diode is in contact with the first organic light-emitting diode. The distance between the diodes is less than L/2, and L is the distance between the first organic light-emitting diode and the second organic light-emitting diode. The optical fingerprint identification device according to claim 2, wherein the optical fingerprint recognition device is located between two adjacent first filters and second filters corresponding to the first organic light-emitting diode and the second organic light-emitting diode. The edge of the black matrix adjacent to the second filter is aligned with the edge of the second organic light emitting diode adjacent to the corresponding pixel definition layer. The optical fingerprint identification device according to claim 2, wherein the protective glass, the filter layer and the luminescent layer are configured to comply with the equation: tanθ1=b1/a1, and θ1 is 3°~7°, where a1 is The vertical distance from the center of the first organic light-emitting diode through the first filter to the upper surface of the protective glass, b1 is the distance from the center of the first organic light-emitting body to the center of the first opening . The optical fingerprint identification device according to claim 2, wherein the first opening is filled with a photoresist having the same wavelength band as the first optical filter. The optical fingerprint identification device as claimed in claim 2, wherein the light sensing device includes: at least one light sensor disposed below the substrate. The optical fingerprint identification device as claimed in claim 2, wherein the light sensing device includes: a plurality of light sensing units, which are disposed in the thin film transistor layer and respectively corresponding to the bottom of the first opening. The optical fingerprint recognition device as claimed in claim 3, wherein in the light-emitting layer, the pixel definition layer between the first organic light-emitting diode and the second organic light-emitting diode is further provided with a second opening. hole, and the distance between the center of the second opening and the second organic light-emitting diode is less than L/2. The optical fingerprint identification device according to claim 8, wherein the protective glass, the filter layer and the luminescent layer are configured to comply with the equation: tanθ2=b2/a2, and θ2 is 3°~7°, where a2 is Passing through the second filter from the center of the second organic light emitting diode b is the distance from the center of the second organic light-emitting body to the center of the second opening. The optical fingerprint identification device as claimed in claim 8, wherein the second opening is filled with a photoresist having the same wavelength band as the second optical filter. The optical fingerprint identification device as claimed in claim 8, further comprising: at least one light sensor disposed below the substrate. The optical fingerprint identification device as claimed in claim 8, further comprising: a plurality of light sensing units disposed in the thin film transistor layer and respectively corresponding to the plurality of first openings and the plurality of second openings. settings. The optical fingerprint identification device as claimed in claim 1, further comprising: a filling layer located between the luminescent layer and the filter layer and covering the luminescent layer and the pixel definition layer.