Signal reading chip, fingerprint recognition module and display device

Abstract

An embodiment of the present application provides a signal reading chip, a fingerprint recognition module, and a display device. The signal reading chip includes a plurality of signal acquisition units and a plurality of multiplexers. Each of the signal acquisition units is electrically connected to one of the multiplexers, and the multiplexer includes a plurality of signal channels. When the number of sensing units in the sensor to be read remains unchanged, since the signal reading chip is provided with multiplexers corresponding one-to-one to the signal acquisition units, and the signal channels in the multiplexer including a plurality of signal channels can correspond one-to-one to the sensing units, therefore, the number of signal acquisition units required in the signal reading chip is greatly reduced. Therefore, the space occupied by the signal acquisition units in the signal reading chip provided in this embodiment will be greatly reduced, thereby reducing the volume and production cost of the signal reading chip.

Description

Technical Field

[0001] The present application relates to the field of display technologies. Specifically, the present application relates to a signal reading chip, a fingerprint recognition module, and a display device. Background Art

[0002] A plurality of signal acquisition units are provided in a signal reading chip, and these signal acquisition units correspond one-to-one to the signal channels to be acquired. For example, if a fingerprint recognition sensor includes a plurality of sensing units, then the fingerprint recognition signal reading chip includes the same number of signal acquisition units as the number of sensing units included in the fingerprint recognition sensor. When the number of sensing units included in the fingerprint recognition sensor to be acquired is too large, the number of signal acquisition units in the signal reading chip also increases accordingly, which increases the space required for the signal acquisition units, is not conducive to the miniaturization of the signal reading chip, and will also increase the cost of the signal reading chip. Summary of the Invention

[0003] In view of the shortcomings of the existing methods, the present application provides a signal reading chip, a fingerprint recognition module, and a display device to solve the technical problem that the number of signal acquisition units in the signal reading chip in the prior art is too large and the occupied space is relatively large.

[0004] In a first aspect, an embodiment of the present application provides a signal reading chip, which includes a plurality of signal acquisition units and a plurality of multiplexers. Each signal acquisition unit is electrically connected to one multiplexer, and each multiplexer includes a plurality of signal channels.

[0005] Optionally, the signal reading chip is a fingerprint recognition signal reading chip.

[0006] In a second aspect, an embodiment of the present application provides a fingerprint recognition module, which includes the above-mentioned signal reading chip and a fingerprint recognition sensor electrically connected to the signal reading chip.

[0007] Optionally, the signal reading chip includes n signal acquisition units and n multiplexers. Each multiplexer includes m signal channels, where both m and n are integers greater than 1; the fingerprint recognition sensor includes X sensing units, and each sensing unit is electrically connected to one signal channel in one multiplexer, where X is equal to m×n.

[0008] Optionally, the X sensing units included in the fingerprint recognition sensor are numbered according to their positional relationships, and n consecutively numbered sensing units are respectively electrically connected to one signal channel in the 1st to nth multiplexers.

[0009] Optionally, the n multiplexers included in the signal reading chip are numbered from 1 to n respectively, and the m signal channels included in each multiplexer are numbered from 1 to m respectively; the sensing units numbered from (a - 1)n + 1 to an are electrically connected to the a-th signal channel among the 1st to n-th multiplexers, where 1 ≤ a ≤ m and a is an integer.

[0010] Optionally, the sensing unit is an optical sensing element.

[0011] In a third aspect, an embodiment of the present application provides a display device, and the display device includes the above-mentioned fingerprint recognition module.

[0012] Optionally, the fingerprint recognition module is an in-screen fingerprint recognition module.

[0013] Optionally, the fingerprint recognition module is an external fingerprint recognition module.

[0014] The beneficial technical effects brought by the technical solution provided by the embodiment of the present application are as follows:

[0015] For the signal reading chip, fingerprint recognition module and display device provided by the embodiment of the present application, when the number of sensing units in the sensor to be read remains unchanged, since the multiplexers corresponding one-to-one with the signal acquisition units are provided in the signal reading chip, and the signal channels in the multiplexer including multiple signal channels can correspond to the sensing units one-to-one, therefore, the number of signal acquisition units required in the signal reading chip is greatly reduced. As a result, the space occupied by the signal acquisition units in the signal reading chip provided by this embodiment will be greatly reduced, thereby reducing the volume and production cost of the signal reading chip.

[0016] Additional aspects and advantages of the present application will be given in part in the following description, and these will become obvious from the following description, or can be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become obvious and easy to understand from the following description of the embodiments in conjunction with the drawings, where:

[0018] Figure 1 is a schematic structural diagram of a signal reading chip provided by an embodiment of the present application;

[0019] Figure 2 is a schematic framework diagram of a fingerprint recognition module provided by an embodiment of the present application;

[0020] Figure 3 is a schematic diagram of the specific correspondence between the signal channels and the sensing units of a fingerprint recognition module provided by an embodiment of the present application;

[0021] Figure 4 Schematic diagram of the frame structure of a display device provided by an embodiment of the present application.

[0022] Reference numerals:

[0023] 10 - Signal reading chip; 101 - Signal acquisition unit; 102 - Multiplexer; 1021 - Signal channel;

[0024] 20 - Fingerprint recognition sensor; 201 - Sensing unit. Detailed implementation manners

[0025] The present application will be described in detail below. Examples of embodiments of the present application are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. In addition, if the detailed description of the known technology is unnecessary for showing the features of the present application, it will be omitted. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.

[0026] Those skilled in the art of the present technology can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of those of ordinary skill in the art in the field to which the present application belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have a meaning consistent with the meaning in the context of the prior art and will not be interpreted with an idealized or overly formal meaning unless specifically defined as herein.

[0027] Those skilled in the art of the present technology can understand that, unless specifically stated, the singular forms "a", "an", "the" and "said" used herein may also include the plural forms. It should be further understood that the term "comprising" used in the specification of the present application means the presence of the described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0028] The inventors of the present application have considered that when the number of signal acquisition units in the signal reading chip is too large, these signal acquisition units will occupy a large space in the signal reading chip, which is not conducive to the miniaturization of the signal reading chip and will also increase the cost of the signal reading chip.

[0029] The signal reading chip, fingerprint recognition module and display device provided by the present application are intended to solve the above technical problems of the prior art.

[0030] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below with specific embodiments.

[0031] An embodiment of the present application provides a signal reading chip 10. As Figure 1 shown, the signal reading chip 10 provided in this embodiment includes a plurality of signal acquisition units 101 and a plurality of multiplexers 102. Each signal acquisition unit 101 is electrically connected to a multiplexer 102, and the multiplexer 102 includes a plurality of signal channels 1021.

[0032] When the number of sensing units 201 in the sensor to be read remains unchanged, since there is a multiplexer 102 corresponding one-to-one to the signal acquisition unit 101 in the signal reading chip 10, and the signal channels 1021 in the multiplexer 102 including a plurality of signal channels 1021 can correspond one-to-one to the sensing units, therefore, the number of signal acquisition units 101 required in the signal reading chip 10 is greatly reduced. Therefore, the space occupied by the signal acquisition units 101 in the signal reading chip 10 provided in this embodiment will be greatly reduced, thereby reducing the volume and production cost of the signal reading chip 10.

[0033] Optionally, the signal reading chip 10 provided in this embodiment is a fingerprint recognition signal reading chip 10.

[0034] As the requirements for clarity, contrast, and image acquisition area of fingerprint recognition technology are getting higher and higher, the number of sensing units required for fingerprint recognition sensors is also increasing. Based on the above situation, the space occupied by the signal acquisition units 101 in the fingerprint recognition signal reading chip 10 provided in this application will be greatly reduced, thereby reducing the volume and production cost of the signal reading chip 10.

[0035] Based on the same inventive concept, an embodiment of the present application also provides a fingerprint recognition module. As Figure 2 shown, the fingerprint recognition module provided in this embodiment includes the signal reading chip 10 provided in the above embodiment and a fingerprint recognition sensor 20 electrically connected to the signal reading chip 10. The fingerprint recognition module provided in this embodiment includes the signal reading chip 10 in the above embodiment and has the beneficial effects of the signal reading chip 10 in the above embodiment, which will not be elaborated here.

[0036] Optionally, as Figure 3 shown, in the fingerprint recognition module provided in this embodiment, the signal reading chip 10 includes n signal acquisition units 101 and n multiplexers 102. Each multiplexer 102 includes m signal channels 1021, where both m and n are integers greater than 1; the fingerprint recognition sensor 20 includes X sensing units 201, and each sensing unit 201 is electrically connected to one signal channel 1021 in one multiplexer 102, where X is equal to m×n.

[0037] In the fingerprint recognition module provided in this embodiment, the number n of signal acquisition units 101 in the signal reading chip 10 is n = X / m, that is, the number of signal acquisition units 101 is only 1 / m of the number of sensing units 201 in the fingerprint recognition sensor 20. When the number of signal channels 1021 included in the multiplexer 102 is larger, the number of signal acquisition units 101 is smaller.

[0038] Optionally, the sensing unit 201 is an optical sensing element.

[0039] Optionally, as Figure 3 shown, the X sensing units 201 included in the fingerprint recognition sensor 20 are numbered according to their positional relationship, and n consecutive sensing units 201 are respectively electrically connected to one signal channel 1021 in the 1st to nth multiplexers 102.

[0040] In this embodiment, n consecutive sensing units 201 are respectively electrically connected to one signal channel 1021 in the 1st to nth multiplexers 102, so that the signal acquisition unit 101 corresponding to the multiplexer 102 one by one can collect the signals on these n sensing units 201 without signal disorder.

[0041] Specifically, as Figure 3 shown, the following method can be used to realize the correspondence between the sensing unit 201 and the signal channel 1021 in the multiplexer 102: the sensing units 201 numbered from (a - 1)n + 1 to an are respectively electrically connected to the ath signal channel 1021 in the 1st to nth multiplexers 102, where 1 ≤ a ≤ m and a is an integer.

[0042] For the sake of convenience of description, taking the number of sensing units 201 included in the fingerprint recognition sensor 20 as 1440, the number of signal acquisition units 101 and multiplexers 102 as 180 each, and the number of signal channels 1021 in the multiplexer 102 as 8 as an example for detailed description.

[0043] The sensing units 201 that sense fingerprint signals are concentrated in one area in terms of position. Therefore, the sensing units 201 are numbered according to their position, so that the sensing units 201 that sense fingerprint signals can be consecutive. In a specific embodiment, the number of sensing units 201 for fingerprint acquisition is 180, and the total number of sensing units 201 in the fingerprint recognition sensor 20 is 1440. As Figure 3 shown, the 1440 sensing units 201 included in the fingerprint recognition sensor 20 are respectively numbered from 1 to 1440, the signal acquisition units 101 and multiplexers 102 are respectively numbered from 1 to 180, and the 8 signal channels 1021 in the multiplexer 102 are respectively numbered from 1 to 8.

[0044] The 1st to 180th sensing units 201 respectively correspond to the 1st signal channel 1021 of the 1st to 180th multiplexers 102. The 181st to 360th sensing units 201 respectively correspond to the 2nd signal channel 1021 of the 1st to 180th multiplexers 102. The 361st to 540th sensing units 201 respectively correspond to the 3rd signal channel 1021 of the 1st to 180th multiplexers 102. The 541st to 720th sensing units 201 respectively correspond to the 4th signal channel 1021 of the 1st to 180th multiplexers 102. The 721st to 900th sensing units 201 respectively correspond to the 5th signal channel 1021 of the 1st to 180th multiplexers 102. The 901st to 1080th sensing units 201 respectively correspond to the 6th signal channel 1021 of the 1st to 180th multiplexers 102. The 1081st to 1260th sensing units 201 respectively correspond to the 7th signal channel 1021 of the 1st to 180th multiplexers 102. The 1261st to 1440th sensing units 201 respectively correspond to the 8th signal channel 1021 of the 1st to 180th multiplexers 102.

[0045] When the numbers of the sensing units 201 for sensing fingerprint information are from 2 to 181, the 2nd to 180th sensing units 201 respectively correspond to the 1st signal channel 1021 in the 2nd to 180th multiplexers 102, and the 181st sensing unit 201 corresponds to the 2nd signal channel 1021 in the 1st multiplexer 102, and so on.

[0046] In this way, no matter when 180 consecutive sensing units 201 with any number sense fingerprint information, these 180 sensing units can be transmitted to the corresponding signal acquisition unit 101 through the corresponding channels in the corresponding multiplexer 102, and then the signal reading chip 10 processes these signals.

[0047] Based on the same inventive concept, the embodiment of the present application further provides a display device, as Figure 4 shown, the display device provided in this embodiment includes the fingerprint recognition module in the above embodiment, and has the beneficial effects of the fingerprint recognition module in the above embodiment, which will not be elaborated here.

[0048] Furthermore, the display device provided in this embodiment further includes a display panel, and the fingerprint recognition sensor 20 is located in the display panel, that is, the fingerprint recognition module in the display device provided in this embodiment is an in-screen fingerprint recognition module.

[0049] Specifically, the area of the fingerprint recognition sensor 20 can be only a part of the display area of the display panel, that is, fingerprint recognition is performed in a specified area of the display panel. The area of the fingerprint recognition sensor 20 can also be the same as the display area of the display panel, that is, fingerprint recognition can be performed at any position in the display area of the display panel.

[0050] Furthermore, the display device provided in this embodiment further includes a housing, and the fingerprint recognition sensor 20 is located on the housing, that is, the fingerprint recognition module in the display device provided in this embodiment is an external fingerprint recognition module.

[0051] Specifically, taking a mobile phone or a tablet computer as an example, the fingerprint recognition sensor 20 can be disposed at the home key, the power key, or the rear housing, etc.

[0052] Applying the embodiments of the present application can at least achieve the following beneficial effects:

[0053] For the signal acquisition chip, fingerprint recognition module, and display device provided in the embodiments of the present application, when the number of sensing units in the sensor to be read remains unchanged, since the signal reading chip is provided with multiplexers corresponding one-to-one to the signal acquisition units, and the signal channels in the multiplexer including multiple signal channels can correspond one-to-one to the sensing units, the number of signal acquisition units required in the signal reading chip is greatly reduced. Therefore, the space occupied by the signal acquisition units in the signal reading chip provided in this embodiment will be greatly reduced, thereby reducing the volume and production cost of the signal reading chip.

[0054] Those skilled in the art of the present technology can understand that the steps, measures, and solutions in the various operations, methods, and processes discussed in the present application can be alternated, changed, combined, or deleted. Further, the other steps, measures, and solutions in the various operations, methods, and processes discussed in the present application can also be alternated, changed, rearranged, decomposed, combined, or deleted. Further, the steps, measures, and solutions in the prior art that are the same as those disclosed in the present application can also be alternated, changed, rearranged, decomposed, combined, or deleted.

[0055] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0056] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0057] In the description of this application, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0058] In the description of this specification, specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner.

[0059] It should be understood that although the steps in the flowchart of the accompanying drawings are shown in sequence according to the indication of the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise clearly stated in this document, there is no strict order restriction for the execution of these steps, and they can be executed in other orders. Moreover, at least a part of the steps in the flowchart of the accompanying drawings may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be executed alternately or in turn with at least a part of other steps or sub-steps or stages of other steps.

[0060] The above are only some embodiments of this application. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of this application, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of this application.

Claims

1. A fingerprint recognition module, characterized in that, it includes a signal reading chip and a fingerprint recognition sensor electrically connected to the signal reading chip; The signal reading chip includes: a plurality of signal acquisition units and a plurality of multiplexers, each of the signal acquisition units is electrically connected to one of the multiplexers, and the multiplexer includes a plurality of signal channels; The signal reading chip includes n signal acquisition units and n multiplexers, each of the multiplexers includes m signal channels, where m and n are both integers greater than 1; The fingerprint recognition sensor includes X sensing units, each of the sensing units is electrically connected to one of the signal channels in one of the multiplexers, where X is equal to m×n.

2. The fingerprint recognition module according to claim 1, characterized in that, the signal reading chip is a fingerprint recognition signal reading chip.

3. The fingerprint recognition module according to claim 1, characterized in that, the X sensing units included in the fingerprint recognition sensor are numbered according to their positional relationship, and n consecutively numbered sensing units are respectively electrically connected to one of the signal channels in the 1st to nth multiplexers.

4. The fingerprint recognition module according to claim 3, characterized in that, the n multiplexers included in the signal reading chip are respectively numbered from 1 to n, and the m signal channels included in each multiplexer are respectively numbered from 1 to m; the sensing units numbered from (a - 1)n + 1 to an are respectively electrically connected to the ath signal channel in the 1st to nth multiplexers, where 1 ≤ a ≤ m and a is an integer.

5. The fingerprint recognition module according to any one of claims 1 - 4, characterized in that, the sensing unit is an optical sensing element.

6. A display device, characterized in that, it includes the fingerprint recognition module according to any one of claims 1 - 5.

7. The display device according to claim 6, characterized in that, the fingerprint recognition module is an in - screen fingerprint recognition module.

8. The display device according to claim 6, characterized in that, the fingerprint recognition module is an external fingerprint recognition module.

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