Sensor module and display device having the same

Abstract

Disclosed are a sensor module and a display device provided with the sensor module, which are a non-contact sensor capable of accurately determining the position of an approaching input unit and a display device provided with the non-contact sensor. The sensor module is provided with a sensor substrate, a plurality of sensor electrodes, and a plurality of sensor wirings. The sensor substrate has a sensor region and a sensor frame region surrounding the sensor region. The plurality of sensor electrodes are located on the sensor region and are arranged into a plurality of rows and a plurality of columns. The plurality of sensor wirings respectively correspond to the plurality of sensor electrodes and are electrically connected to the corresponding sensor electrodes, and each has a terminal on the sensor frame region. The plurality of terminals are arranged on one side of the sensor region. In each column, at least one of the sensor wirings connected to the sensor electrodes has a resistance adjustment portion. In the sensor wiring having the resistance adjustment portion, the resistance of the resistance adjustment portion is higher than the resistance of other portions.

Description

TECHNICAL FIELD

[0001] One embodiment of the present application relates to a sensor module and a display device provided with the sensor module. For example, one embodiment of the present application relates to a noncontact sensor module and a display device provided with the noncontact sensor module. BACKGROUND

[0002] Touch sensors are widely used as one of interfaces for inputting information to information terminals. The currently mainstream touch sensors determine the position at which a person's finger or hand directly contacts the touch sensor. In contrast, in recent years, a noncontact sensor (hover sensor) has been developed, which enables information to be inputted without bringing a person's finger or hand, or an input tool such as a touch pen (hereinafter, these are referred to as input units) into contact with the touch sensor, but only by locating it in the vicinity of the touch sensor (see Patent Documents 1 to 3).

[0003] PRIOR ART DOCUMENTS

[0004] PATENT DOCUMENTS

[0005] Patent Document 1: US Patent Application Publication No. 2014 / 0049486 Specification

[0006] Patent Document 2: US Patent Application Publication No. 2013 / 0342498 Specification

[0007] Patent Document 3: US Patent Application Publication No. 2014 / 0049508 Specification SUMMARY

[0008] One of the problems of one embodiment of the present application is to provide a noncontact sensor having a novel structure and a display device provided with the noncontact sensor. Alternatively, one of the problems of one embodiment of the present application is to provide a noncontact sensor capable of accurately determining the position of an input unit that is approaching and a display device provided with the noncontact sensor.

[0009] One embodiment of the present application is a sensor module. The sensor module includes a sensor substrate, a plurality of sensor electrodes, and a plurality of sensor wirings. The sensor substrate has a sensor region and a sensor frame region surrounding the sensor region. The plurality of sensor electrodes are located on the sensor region and are arranged in a plurality of rows and a plurality of columns. The plurality of sensor wirings respectively correspond to the plurality of sensor electrodes and are electrically connected to the corresponding sensor electrodes, and each of the plurality of sensor wirings has a terminal on the sensor frame region. The plurality of terminals are arranged on one side of the sensor region. In each column, at least one of the sensor wirings connected to the sensor electrodes has a resistance adjustment portion. In the sensor wiring having the resistance adjustment portion, the resistance of the resistance adjustment portion is higher than the resistance of other portions.

[0010] One embodiment of the present invention is a sensor module. The sensor module includes a sensor substrate, a plurality of sensor electrodes, and a plurality of sensor wirings. The sensor substrate has a sensor region and a sensor border region surrounding the sensor region. The plurality of sensor electrodes are located on the sensor region and arranged in a plurality of rows and columns. The plurality of sensor wirings correspond to the plurality of sensor electrodes respectively and are electrically connected to their respective sensor electrodes, and each has a terminal on the sensor border region. The plurality of terminals are arranged on one side of the sensor region. In each column, at least one of the plurality of sensor electrodes has at least one cutout.

[0011] One embodiment of the present invention is a display device. The display device includes a display module and a sensor module on the display module. The display module includes an array substrate having a plurality of pixels. The sensor module includes a sensor substrate, a plurality of sensor electrodes, and a plurality of sensor wirings. The sensor substrate has a sensor region and a sensor border region surrounding the sensor region. The plurality of sensor electrodes are located on the sensor region and arranged in a plurality of rows and columns. The plurality of sensor wirings correspond to the plurality of sensor electrodes and are electrically connected to their respective sensor electrodes, and each has a terminal on the sensor border region. The plurality of terminals are arranged on one side of the sensor region. In each column, at least one of the sensor wirings connected to the sensor electrodes has a resistance adjustment portion. In the sensor wiring with the resistance adjustment portion, the resistance of the resistance adjustment portion is higher than the resistance of other portions.

[0012] One embodiment of the present invention is a display device. The display device includes a display module and a sensor module on the display module. The display module includes an array substrate having a plurality of pixels. The sensor module includes a sensor substrate, a plurality of sensor electrodes, and a plurality of sensor wirings. The sensor substrate has a sensor region and a sensor border region surrounding the sensor region. The plurality of sensor electrodes are located on the sensor region and arranged in a plurality of rows and columns. The plurality of sensor wirings correspond to and are electrically connected to the respective sensor electrodes, and each has a terminal on the sensor border region. The plurality of terminals are arranged on one side of the sensor region. In each column, at least one of the plurality of sensor electrodes has at least one cutout. Attached Figure Description

[0013] Figure 1 This is a schematic exploded perspective view of a display device according to an embodiment of the present invention.

[0014] Figure 2 This is a schematic top view of the sensor module involved in the embodiments of the present invention.

[0015] Figure 3This is a schematic top view of the sensor module involved in the embodiments of the present invention.

[0016] Figure 4A This is a schematic cross-sectional view of the sensor module involved in the embodiments of the present invention.

[0017] Figure 4B This is a schematic cross-sectional view of the sensor module involved in the embodiments of the present invention.

[0018] Figure 5 This is a schematic cross-sectional view of the sensor module involved in the embodiments of the present invention.

[0019] Figure 6 This is a schematic top view of the sensor module involved in the embodiments of the present invention.

[0020] Figure 7A This is a schematic top view of the sensor module involved in the embodiments of the present invention.

[0021] Figure 7B This is a schematic top view of the sensor module involved in the embodiments of the present invention.

[0022] Figure 8A This is a schematic top view of the sensor module involved in the embodiments of the present invention.

[0023] Figure 8B This is a schematic top view of the sensor module involved in the embodiments of the present invention.

[0024] Figure 8C This is a schematic top view of the sensor module involved in the embodiments of the present invention.

[0025] Figure 8D This is a schematic top view of the sensor module involved in the embodiments of the present invention.

[0026] Figure 8E This is a schematic top view of the sensor module involved in the embodiments of the present invention.

[0027] Figure 8F This is a schematic top view of the sensor module involved in the embodiments of the present invention.

[0028] Figure 9 This is a schematic top view of the sensor module involved in the embodiments of the present invention.

[0029] Figure 10 This is a schematic top view of the sensor module involved in the embodiments of the present invention.

[0030] Figure 11 This is a schematic top view of the sensor module involved in the embodiments of the present invention.

[0031] Figure 12 This is a schematic top view of the sensor module involved in the embodiments of the present invention.

[0032] Figure 13 This is a schematic top view of the sensor module involved in the embodiments of the present invention.

[0033] Figure 14 This is a schematic top view of the sensor module involved in the embodiments of the present invention.

[0034] Figure 15 This is a schematic top view of the sensor module involved in the embodiments of the present invention.

[0035] Figure 16 This is a schematic top view of the sensor module involved in the embodiments of the present invention.

[0036] Figure 17A This is a schematic top view of the sensor module involved in the embodiments of the present invention.

[0037] Figure 17B This is a schematic top view of the sensor module involved in the embodiments of the present invention.

[0038] Figure 18 This is a schematic top view of the sensor module involved in the embodiments of the present invention.

[0039] Explanation of reference numerals in the attached figures

[0040] 100. Display device; 102. Adhesive layer; 110. Display module; 112. Array substrate; 114. Opposing substrate; 116. Pixel; 118. Connector; 120. Display area; 200. Sensor module; 202. Sensor substrate; 204. Cover substrate; 206. Sensor electrode; 206-1. Sensor electrode; 206-2. Sensor electrode; 206-3. Sensor electrode; 206-4. Sensor electrode; 206a. Cutout; 206b. Opening; 206c. Frame; 206d. Dummy electrode; 207. Quadrilateral; 208. Sensor wiring; 208-1. Sensor wiring; 208-2. Sensor wiring; 208-3. Sensor wiring; 208-4. Sensor wiring; 208a. Terminal; 208b. Resistance adjustment section; 20 8c, Slit; 208d, Cut; 208e, Frame; 208f, Opening; 209, Dummy Electrode; 210, Sensor Area; 212, Sensor Frame Area; 216, Second Connector; 218, First Connector; 220, Power Circuit; 222, Detector; 224, Operational Element; 226, Interface; 230, Noise Shielding Layer; 232, Interlayer Insulation Film; 234, Protective Film; 234-1, First Protective Film; 234-2, Second Protective Film; 236, Adhesive Layer; 238, Shielding Wiring; 238a, Terminal; 238b, Resistance Adjustment Section; 240, Auxiliary Wiring; 242, Shielding Electrode; 244, Shielding Electrode; 244a, Cut; 246, Shielding Wiring; 246a, Terminal; 246b, Resistance Adjustment Section; 248, Auxiliary Shielding Wiring. Detailed Implementation

[0041] Hereinafter, various embodiments of the present invention will be described with reference to the accompanying drawings. However, the present invention can be implemented in various ways without departing from its spirit and should not be construed as limited to the contents described in the embodiments illustrated below.

[0042] To make the description clearer, the width, thickness, shape, etc. of various parts are sometimes schematically shown in the drawings compared to the actual method. However, this is only an example and does not limit the interpretation of the invention. In this specification and the various drawings, elements that have the same function as elements described in previously appearing drawings are sometimes given the same reference numerals, omitting repeated descriptions. The reference numerals are used when multiple identical or similar structures are uniformly represented; when represented individually, a hyphen and a natural number are added after the reference numerals. In addition, when representing a part of a structure, a lowercase letter is sometimes added after the reference numeral.

[0043] In this specification and claims, when describing the manner in which other structures are configured on a certain structure, if it is simply stated as "on," unless otherwise specified, it includes the following two cases: configuring other structures directly above and in contact with a certain structure, and configuring other structures above a certain structure and further separated by another structure.

[0044] In this specification and claims, the phrase "a structure is exposed from another structure" means that a portion of a structure is not covered by another structure, and also includes the situation where the portion not covered by another structure is covered by another structure. Furthermore, this phrase also includes situations where a structure is not in contact with other structures.

[0045] In embodiments of the present invention, when multiple films are formed simultaneously in the same process, these films have the same layer structure, the same material, and the same composition. Therefore, these multiple films are defined as existing in the same layer.

[0046] The structure of the sensor module 200 and the display device 100 having the sensor module 200 as one embodiment of the present invention will be described below.

[0047] 1. Overall Structure

[0048] Figure 1 The diagram shows a schematic exploded perspective view of a display device 100. The display device 100 includes a display module 110 and a sensor module 200 disposed on the display module 110. The display module 110 and the sensor module 200 are connected via... Figure 1 The adhesive layers, not shown, are fixed together.

[0049] 2. Display module

[0050] Display module 110 is a device with image display function, and its basic components include an array substrate 112, a plurality of pixels 116 formed on the array substrate 112, and a counter substrate 114 on the array substrate 112. The smallest rectangular area surrounding the plurality of pixels 116 is called display area 120. Each pixel 116 has a display element and functions as the smallest unit for providing color information. As a display element, liquid crystal elements are represented, and examples include organic light-emitting elements (OLEDs). When liquid crystal elements are used, display module 110 is also provided with a light source (backlight) not shown. Each pixel 116 operates according to power supply and image signals supplied via a connector 118 such as a flexible printed circuit (FPC) substrate, to provide light of a specific color based on the grayscale of the image signal. By controlling the operation of the pixels 116 based on the image signal, an image can be displayed on display area 120.

[0051] The size of the display module 110 is not limited. For example, it can be the size of a mobile communication terminal, which is referred to as 12.1 inches (31 cm), or the size suitable for a monitor or television, signage, etc. connected to a computer (e.g., 14.1 inches (36 cm) to 32 inches (81 cm), or even a larger size.

[0052] 3. Sensor Module

[0053] 3-1. Overall Composition

[0054] The sensor module 200 is a device that transmits light from the display module 110 while also functioning as an interface for inputting information into the display device 100. The sensor module 200 is a so-called non-contact sensor module, capable of detecting and determining the position of the input unit on the sensor module 200 not only when an input unit, such as a finger or palm, or a stylus with a resin tip, is in contact with the sensor module 200, but also when the input unit is not in contact with the sensor module 200 and is positioned nearby (e.g., within 5 mm, 10 mm, or 20 mm of the outermost surface of the sensor module 200).

[0055] Specifically, such as Figure 1 Or schematic top view ( Figure 2 As shown, the sensor module 200 includes a sensor substrate 202 and a cover substrate 204 opposite to the sensor substrate 202. A plurality of sensor electrodes 206 are disposed between the sensor substrate 202 and the cover substrate 204. The plurality of sensor electrodes 206 are arranged in multiple rows and multiple columns. Figure 2 In the example shown, 24 sensor electrodes 206 are disposed in the sensor module 200, and the 24 sensor electrodes 206 are arranged in a matrix of 4 rows and 6 columns. The number or size of the sensor electrodes 206 can be appropriately set according to the size of the display device 100, the required detection accuracy of the sensor module 200, etc. The smallest rectangular area surrounding all the sensor electrodes 206 is called the sensor area 210, and the area surrounding the sensor area 210 is called the sensor border area.

[0056] In order to make the image displayed by the display module 110 visually confirmable, the sensor substrate 202 and the cover substrate 204 are made of a material that transmits visible light. Therefore, the sensor substrate 202 and the cover substrate 204 are made of polymer materials such as glass, quartz, polyimide, polyamide, polycarbonate, etc.

[0057] Each sensor electrode 206 is configured to overlap with a plurality of pixels 116 and at least a portion of the display area 120. For example, asFigure 2 As shown, sensor electrode 206 is configured such that sensor region 210, indicated by the dashed line, overlaps with the entire display region 120. Although not shown, sensor region 210 may have the same shape as display region 120. Alternatively, sensor region 210 may be smaller than display region 120. In this case, sensor electrode 206 is configured such that the entire sensor region 210 overlaps with display region 120.

[0058] The sensor electrode 206 comprises a conductive oxide that transmits visible light, such as indium tin oxide (ITO) or indium zinc oxide (IZO), or a metal (zero-valent metal) such as molybdenum, tungsten, tantalum, aluminum, or copper. The sensor electrode 206 can have a single-layer structure or a multilayer structure. For example, the sensor electrode 206 can have a structure comprising a layer containing a conductive oxide and a layer containing a metal. As described later, each sensor electrode 206 is provided with sensor wiring. That is, multiple sensor wirings corresponding to the multiple sensor electrodes 206 are provided on the sensor substrate 202. Each sensor wiring is exposed on the sensor substrate 202 to form a terminal 208a.

[0059] A first connector 218, such as an FPC substrate, is electrically connected to terminal 208a. The first connector 218 is connected to an external circuit (not shown). A power supply circuit 220, a detector 222, an arithmetic element 224, an interface 226, etc., can be configured on the first connector 218. The power supply circuit 220 converts the power supplied by the external circuit into a pulsed AC voltage and supplies this AC voltage to each sensor electrode 206 via terminal 208a and sensor wiring. The detector 222, also known as an analog front end (AFE), detects potential changes as capacitance changes of the sensor electrode 206, digitizes these potential changes, and converts them into a detection signal. The detection signal generated by the detector 222 is input to the arithmetic element 224, which generates coordinates representing the position of the input unit based on the detection signal. The detector 222 and the arithmetic element 224 can also be configured as an integrated circuit (IC) chip. The interface 226 is used for connection to external circuits and is configured based on standards such as Universal Serial Bus (USB) or Serial Peripheral Interface (SPI).

[0060] 3-2. Configuration of each component

[0061] Figure 3A partial, enlarged top view schematically illustrates the sensor module 200. As shown in the figure, each sensor electrode 206 is provided with a corresponding sensor wiring 208. That is, the sensor module 200 has the same number of sensor wirings 208 as the sensor electrodes 206, and one sensor wiring 208 is electrically connected to one sensor electrode 206. Thus, the sensor electrode 206 is electrically connected to the terminal 208a. Furthermore, each sensor wiring 208 connects its corresponding sensor electrode 206 to its corresponding terminal 208a without passing through other sensor electrodes 206. In other words, one sensor wiring 208 is not connected to multiple sensor electrodes 206, and similarly, one sensor electrode 206 is not connected to multiple sensor wirings 208. Figure 3 In the example shown, sensor wiring 208-1 to 208-4 correspond to and are electrically connected to sensor electrodes 206-1 to 206-4, respectively.

[0062] As described above, a pulsed AC voltage of the same phase is applied to the sensor electrodes 206 via sensor wiring 208. When the input unit approaches the sensor electrodes 206, a virtual capacitor is formed between the input unit and the sensor electrodes 206, resulting in a change in the potential of each sensor electrode 206. This potential change is detected and digitally converted by detector 222, and the coordinates of the approached position of the input unit are determined in the arithmetic element 224 based on the amount of potential change and the position (coordinates) of each sensor electrode 206. In this way, the sensor module 200 functions as a capacitive (self-capacitive) non-contact sensor (hover sensor).

[0063] As an arbitrary configuration, the sensor module 200 can be configured with shielded wiring 238. Specifically, as... Figure 3As shown, the sensor module 200 can be configured with one or more shielded wirings 238 extending as a whole in the column direction and passing through multiple rows. Each shielded wiring 238 is separated from the sensor electrode 206. When multiple shielded wirings 238 are provided, for example, the same number of shielded wirings 238 as the number of columns can be configured so that the sensor electrode 206 and the shielded wiring 238 alternate in each row. Each shielded wiring 238 is exposed near the end of the sensor substrate 202 to form a terminal 238a in the sensor frame region. The terminal 238a is formed on one side of the sensor region 210 where the terminal 208a of the sensor wiring 208 is disposed. A pulsed AC voltage in phase with the sensor electrode 206 is applied from the power supply circuit 220 to the shielded wiring 238 via the terminal 238a. The shielded wiring 238 does not need to help determine the coordinates of the input unit, therefore, the shielded wiring 238 may not be connected to the detector 222. By configuring the shielded wiring 238, a shielded wiring 238 exists between the sensor wiring 208 and the sensor electrodes 206 arranged in adjacent columns, reducing the impact of potential variations in the sensor electrodes 206 in adjacent columns. As a result, the coordinates of the input unit can be determined more accurately.

[0064] Figure 4A The middle shows along Figure 3 A schematic diagram of the cross section of the dotted line AA′. Figure 4A The image also shows the opposing substrate 114 of the display module 110. For example... Figure 4A As shown, the display module 110 and the sensor module 200 are fixed to each other by an adhesive layer 102 that transmits visible light. It should be noted that when the display module 110 is a liquid crystal display device, a polarizing plate or similar material is provided on the opposing substrate 114.

[0065] As an optional configuration, a noise shielding layer 230 for shielding electrical influences from the display module 110 can be provided between the sensor substrate 202 and the opposing substrate 114. The noise shielding layer 230 can be disposed above or below the adhesive layer 102. The noise shielding layer 230 includes a light-transmitting oxide such as conductive ITO or IZO, or a metal. In the latter case, a mesh-like metal film with multiple openings can be used as the noise shielding layer 230 to allow visible light transmission. The noise shielding layer 230 is configured to overlap with the multiple sensor electrodes 206. The noise shielding layer 230 is electrically connected to a second connector 216 such as an FPC substrate (see reference). Figure 1 The noise shielding layer 230 is subjected to a pulsed AC voltage that is in phase with the potential applied to the sensor electrode 206. Therefore, the noise shielding layer 230 and the sensor electrode 206 are always at the same potential.

[0066] Sensor wiring 208 and shielding wiring 238 are disposed directly on the sensor substrate 202 or through an insulating undercoating layer (not shown), and sensor electrodes 206 are disposed above them. In this case, the sensor electrodes 206 can be directly disposed on the sensor wiring 208, or as shown... Figure 4A As shown, they can be arranged with an interlayer insulating film 232, such as one containing silicon-containing inorganic compounds like silicon oxide or silicon nitride, in between. In the latter case, the sensor electrode 206 and the sensor wiring 208 are electrically connected to each other through an opening provided in the interlayer insulating film 232. It should be noted that the vertical relationship between the sensor electrode 206 and the sensor wiring 208 is not limited, such as... Figure 4B As shown, sensor wiring 208 can be configured above sensor electrode 206. Additionally, shielding wiring 238 can exist in the same layer as sensor wiring 208, although not shown, it can also be located in the same layer as sensor electrode 206.

[0067] Or, such as Figure 5 As shown, the sensor electrode 206, sensor wiring 208, and shielding wiring 238 can be configured to exist in the same layer. That is, the sensor electrode 206 and sensor wiring 208 with the same composition can be formed simultaneously in the same process. In this case, the sensor electrode 206 and sensor wiring 208 preferably contain metal to prevent an increase in resistance, for example, they can have a laminated structure containing a film of a conductive, transparent oxide and a film containing metal.

[0068] When the sensor electrode 206 contains metal, it is preferable that the sensor electrode 206 is formed in a mesh shape to prevent interference with the image displayed by the display module 110. When the sensor electrode 206 has a laminated structure comprising a film containing a conductive, light-transmitting oxide and a film containing metal, it is sufficient to form either of these films or the latter film in a mesh shape. Specifically, as... Figure 5 A magnified view of a part Figure 6 As shown, the display module 110 has multiple openings 206b formed by a frame 206c, and the individual sensor electrodes 206 are arranged in a grid pattern so that the image can be visually confirmed through the openings 206b. This ensures that the sensor electrodes 206 have sufficient conductivity while allowing visual confirmation of the image from the display module 110. Furthermore, as... Figure 6As shown, the sensor wiring 208 can also be configured with a grid shape. Preferably, the grid patterns of the sensor electrode 206 and the sensor wiring 208 are the same or substantially the same. That is, preferably, the width of the frame 206c constituting the grid of the sensor electrode 206 is the same or substantially the same as the width of the frame 208e constituting the grid of the sensor wiring 208. Similarly, preferably, the shape, size, and spacing of the openings 206b of the grid of the sensor electrode 206 are the same or substantially the same as the shape, size, and spacing of the openings 208f of the grid of the sensor wiring 208. Similarly, the shielding wiring 238 can also be configured to have the same grid shape as the sensor electrode 206 and the sensor wiring 208. By giving the sensor wiring 208 and the shielding wiring 238 the same grid shape as the sensor electrode 206, moiré fringes can be prevented.

[0069] Furthermore, such as Figure 6 As shown, preferably, a plurality of dummy electrodes 209, existing in the same layer as the sensor electrodes 206 and sensor wiring 208, are also disposed between adjacent sensor electrodes 206, between sensor electrodes 206 and sensor wiring 208, and between sensor electrodes 206 and shielding wiring 238. The plurality of dummy electrodes 209 are not connected to each other and are electrically insulated from the sensor electrodes 206, sensor wiring 208, and shielding wiring 238, thus becoming electrically floating. Preferably, the plurality of dummy electrodes 209 have the same or substantially the same width as frames 206c and 208e, and the extension direction of at least a portion of each dummy electrode 209 is parallel to a portion of frame 206c and a portion of frame 208e. Furthermore, preferably, the spacing of the plurality of dummy electrodes 209 is the same or substantially the same as the spacing of openings 206b and 208f. By adopting this configuration, nearly uniform optical characteristics can be obtained throughout the entire sensor region 210 in the layer where the sensor electrodes 206 and sensor wiring 208 are formed, thus effectively preventing the generation of moiré fringes. It should be noted that, in Figure 6 In this context, the shading applied to sensor electrode 206, sensor wiring 208, shielding wiring 238, and dummy electrode 209 differs, but they can have the same composition and the same layer structure. Furthermore, Figure 6 The dummy electrode 209 shown is bent and presents a so-called "he" shape, but the dummy electrode 209 can be further broken at the bend. In addition, besides this shape, a configuration in which the straight thin line forming the dummy electrode 209 is broken along its course can also be adopted.

[0070] from Figure 3 , Figure 4A as well as Figure 4BIt is understood that each sensor wiring 208 is configured to at least not overlap with any sensor electrode 206 except for the sensor electrode 206 connected to that sensor wiring 208. In other words, each sensor wiring 208 is configured to be fully exposed from at least all sensor electrodes 206 except for the sensor electrode 206 connected to that sensor wiring 208. Or, from Figure 3 and Figure 5 It is understood that each sensor wiring 208 is configured not to overlap with any of the sensor electrodes 206, including the sensor electrodes 206 connected to that sensor wiring 208. In other words, each sensor wiring 208 is configured to be fully exposed from all of the sensor electrodes 206, including the sensor electrodes 206 connected to that sensor wiring 208. Thus, by constructing and configuring the sensor electrodes 206 and the sensor wiring 208, it is possible to prevent the formation of capacitance (parasitic capacitance) between the sensor wiring 208 and the sensor electrodes 206. Therefore, even if the input unit is close to the sensor electrode 206-1 and the potential of the sensor wiring 208-1 changes, this potential change will not affect the other sensor electrodes 206. As a result, the detection signal of the sensor electrode 206-1 will not be scattered to other sensor electrodes 206, and the detection position (coordinates) of the input unit can be accurately determined.

[0071] The protective film 234 can be disposed on the sensor wiring 208 and the sensor electrode 206 in any configuration (see reference). Figure 4A to Figure 5 The protective film 234 has a single-layer or multi-layer structure and is composed of a film containing resins such as silicon-containing inorganic compounds, epoxy resins, acrylic resins, and silicone resins. Figure 4A to Figure 5 The illustration shows a protective film 234 formed by stacking a first protective film 234-1 containing an inorganic compound and a second protective film 234-2 containing a resin. The stacking order of the first protective film 234-1 and the second protective film 234-2 is not limited; the first protective film 234-1 can be stacked on top of the second protective film 234-2. The first protective film 234-1 containing the resin also functions as a planarization film. A cover substrate 204 is fixed to the protective film 234 via an adhesive layer 236 that transmits visible light.

[0072] 3-3. Resistance Adjustment

[0073] (1) Resistance adjustment based on sensor wiring

[0074] As described above, the terminals 208a of the sensor wiring 208 are connected to the first connector 218, and are therefore arranged on one side of the sensor region 210 in the sensor frame region (see reference). Figure 2 , Figure 3Therefore, the distance from sensor electrode 206 to terminal 208a varies depending on the position of sensor electrode 206. More specifically, considering a column, sensor wiring 208-1, connected to sensor electrode 206-1 furthest from terminal 208a, is the longest, while sensor wiring 208-4, connected to sensor electrode 206-4 closest to terminal 208a, is the shortest. Thus, in each column, the resistance of sensor wiring 208 varies row by row. As a result, the time constant of sensor electrode 206, which enables the sensor to function, varies row by row (i.e., the distance between terminal 208a and sensor electrode 206, hereinafter the same), and the detection sensitivity of the input unit varies depending on the row or the distance between terminal 208a and sensor electrode 206.

[0075] Therefore, in the sensor module 200, in order to suppress this change in detection sensitivity, a resistance adjustment section 208b is formed in the sensor wiring 208. Specifically, as shown in... Figure 7A As shown, in each column, a resistance adjustment section 208b is provided in at least one of the plurality of sensor wirings 208. In the sensor wiring 208 where the resistance adjustment section 208b is provided, the resistance of the resistance adjustment section 208b is higher than the resistance of other parts. If the material, thickness, and width are the same, the resistance of the sensor wiring 208 increases proportionally with its length. Therefore, in order to make the resistances of the sensor wirings 208 the same or substantially the same, the resistance adjustment section 208b of the sensor wiring (here, sensor wiring 208-4) connected to the sensor electrode 206 closest to the terminal 208a has the largest resistance. The resistance adjustment section 208b is formed such that the greater the distance of the sensor electrode 206 from the terminal 208a, the smaller the resistance of the resistance adjustment section 208b of the sensor wiring 208 connected to it. In other words, the resistance adjustment section 208b is formed such that its resistance decreases as the length of the sensor wiring 208 increases. Thus, in each column, the resistances of the plurality of sensor wirings 208 can be adjusted to be the same or substantially the same.

[0076] For example, the resistance adjustment section 208b can be configured such that its resistance increases sequentially with respect to the sensor wirings 208-2, 208-3, 208-4 connected to the sensor electrodes 206-2, 206-3, 206-4 arranged in the second, third, and fourth rows, respectively, while the resistance adjustment section 208b is not provided in the longest sensor wiring 208-1. Alternatively, although not shown, the resistance adjustment section 208b can be provided in the longest sensor wiring 208-1. In this case, the resistance adjustment section 208b is configured such that its resistance increases sequentially with respect to the sensor wirings 208-1, 208-2, 208-3, 208-4 connected to the sensor electrodes 206-1, 206-2, 206-3, 206-4 arranged in the first, second, third, and fourth rows, respectively. It should be noted that although in Figure 7A The example shown is an example in which all resistance adjustment parts 208b are provided in the sensor frame area 212, but all or some of the resistance adjustment parts 208b may be provided in the sensor area 210.

[0077] The resistance adjustment section 208b can be formed simply by adjusting the shape of the sensor wiring 208. For example, as Figure 7B As shown, the resistance adjustment section 208b can be formed by setting the width (length in the direction perpendicular to the direction in which the sensor wiring 208 extends) of the resistance adjustment section 208b to be smaller than the width of other parts. Alternatively, as... Figure 8A As shown, the sensor wiring 208 can be bent so that its width is the same as that of the resistance adjustment section 208b, and this bent portion can be used as the resistance adjustment section 208b. Alternatively, a portion of the sensor wiring 208 can be formed into a grid shape, and this portion can be used as the resistance adjustment section 208b. Figure 8B Because the area per unit length is reduced in the grid-like section, the resistance can be increased compared to other sections. The shape for reducing the area per unit length is not limited to a grid shape; it can be, for example... Figure 8C The slit 208c shown, or it could be Figure 8D or Figure 8E The cut 208d is shown. The extending direction of the cut 208d relative to the extending direction of the sensor wiring 208 can have any angle, and the cut 208d can be bent. Alternatively, the sensor wiring 208 can be given a sawtooth shape, and this part can be used as the resistance adjustment part 208b. Figure 8F In this context, a slit refers to an opening with a closed shape, while a cut refers to an opening with an open shape. A closed shape is one whose defining contour has no ends and is given at least one closed plane. On the other hand, an open shape is one whose defining contour has at least two ends.

[0078] (2) Resistance adjustment based on sensor electrodes

[0079] Instead of resistance adjustment based on the aforementioned sensor wiring 208, or simultaneously, resistance adjustment can be performed using the sensor electrodes 206. Specifically, as... Figure 9 As shown, at least one or more straight or curved cutouts 206a can be provided in the sensor electrode 206 to impart resistance for resistance adjustment. The cutout 206a refers to an opening such that, when viewed from above, the sensor electrode 206 overlaps with the entire structure, externally connected to the sensor electrode 206, and, considering a virtual quadrilateral 207 formed by two sides parallel to the row direction and two sides parallel to the column direction, the area formed between this quadrilateral 207 and the sensor wiring 208 has an open shape. Figure 10 ).

[0080] A notch 206a is provided so that the sum of the resistances (hereinafter referred to as the total resistance) of the portions of the sensor electrodes 206, excluding the portion that functions as a sensor (i.e., the portion overlapping with the virtual quadrilateral 207 and the portion not connected to the sensor wiring 208 other than the virtual quadrilateral 207), and the sensor wiring 208 is the same or substantially the same. Therefore, for example, as... Figure 9 As shown, no notch 206a is provided in the sensor electrode 206-1, which is furthest from terminal 208a. The number, length, and width (i.e., the area of ​​the notch 206a) of the notches 206a can be adjusted so that the total resistance increases in the order of the sensor electrodes 206-2, 206-3, and 206-4, which are located closer to terminal 208a. Alternatively, although not shown, notch 206a can be provided in all sensor electrodes 206 in each column. The area of ​​the notch 206a can be adjusted so that the total resistance increases as the distance from terminal 208a decreases (i.e., in the order of the first, second, third, and fourth rows).

[0081] When the sensor electrode 206 and sensor wiring 208 have a grid shape, such as Figure 11 As shown, the cut 206a can be formed as a gap, and the gap is formed by cutting the frame 206c between adjacent openings 206b in a direction perpendicular to the direction in which the cut 206a extends, to achieve insulation (see reference). Figure 11 The gaps in the enlarged image (in the image). Therefore, as... Figure 11 As shown by the arrow, a narrow and curved conductive path is formed, which can increase the total resistance.

[0082] The shape of the cut 206a is not limited; for example, the cut 206a can be configured to extend in the row direction. Figure 12Although not illustrated, it can be used to replace cut 206a or to create a slit together with cut 206a.

[0083] It should be noted that when the sensor electrode 206 and the sensor wiring 208 exist in the same layer, since the sensor electrode 206 and the sensor wiring 208 have the same composition, it is sometimes impossible to clearly define the boundary between them. In this case, the portion of the sensor electrode 206 other than the virtual quadrilateral 207 that is connected to the sensor wiring 208 can be identified as part of the sensor electrode 206, or it can be identified as the aforementioned resistance adjustment section 208b.

[0084] 4. Variations

[0085] The structure of the sensor module 200 is not limited to the structure described above, and various structures can be adopted. Several variations will be described below. In the following description, the example in which a resistance adjustment section 208b is provided in the sensor wiring 208 is shown as the main example, but the cutout 206a can also be used instead of the resistance adjustment section 208b or formed together with the resistance adjustment section 208b on the sensor electrode 206 to suppress or eliminate the line dependence of the time constant.

[0086] (1) Variation Example 1

[0087] exist Figure 3 In the example shown, in each column, the area of ​​the sensor electrode 206 configured in the sensor module 200 increases with the distance from the terminal 208a. This configuration simplifies the layout of the sensor wiring 208, and allows for a high-density arrangement of the sensor electrodes 206.

[0088] However, the configuration of the sensor module 200 is not limited to this, such as... Figure 13 As shown, the sensor module 200 can also be configured such that all sensor electrodes 206 have the same shape and area. By making the areas of the sensor electrodes 206 the same, the line dependence of the potential variation caused by the proximity of the input units is reduced, thus making the design of the resistance adjustment section 208b and the notch 206a easier, and at the same time enabling more accurate determination of the coordinates of the input units.

[0089] In this configuration, from Figure 13It is understood that the area occupied by the sensor wiring 208 between adjacent sensor electrodes 206 in the row direction decreases as the distance from the terminal 208a increases. Therefore, when the shielding wiring 238 is configured, the shielding wiring 238 can be configured such that its width (i.e., its length in the row direction) increases stepwise or continuously with distance from the terminal 208a. In this way, by configuring the shielding wiring 238 with a variable width in the column direction, the electric field between the input unit approaching the adjacent sensor electrodes 206 and the sensor region 210 becomes uniform without distortion. Since the electric field overlapping with the sensor electrodes 206 in this electric field is detected as a capacitance change, unbiased detection can be performed regardless of the row.

[0090] (2) Variation Example 2

[0091] In sensor module 200, such as Figure 14 As shown, auxiliary wiring 240, different from sensor wiring 208, can be provided for each sensor electrode 206. Specifically, multiple auxiliary wirings 240 are provided, each corresponding to a plurality of sensor electrodes 206. One auxiliary wiring 240 is selectively connected to one sensor electrode 206 and extends in the opposite direction to terminal 208a. The auxiliary wiring 240 is not connected to any other conductive components other than the sensor electrode 206 to which it is connected. Therefore, a pulsed AC voltage in phase with the sensor electrode 206 is also applied to the auxiliary wiring 240. Each auxiliary wiring 240 can also be configured to contain a conductive, light-transmitting oxide or metal. In the latter case, by configuring both the sensor electrode 206 and the auxiliary wiring 240 to have a grid-like shape, it is possible to visually confirm the image through the sensor electrode 206 and the auxiliary wiring 240 while preventing the generation of moiré fringes.

[0092] By arranging the auxiliary wiring 240 in this way, the wiring density, i.e., the sum of the areas of the sensor wiring 208 and the auxiliary wiring 240, is almost constant in the column direction. Therefore, for example, when the input unit is close to a position P2 near the terminal 208a, the largest potential change is generated in the sensor electrode 206-4 of the fourth row closest to its coordinates, and secondary potential changes are also generated in the sensor wiring 208 arranged near the sensor electrode 206-4 of the fourth row and in the sensor electrodes 206 of the first to third rows connected to them. Similarly, when the input unit is close to a position P1 far from the terminal 208a, the largest potential change is generated in the sensor electrode 206 of the first row closest to its coordinates, and secondary potential changes are generated in the auxiliary wiring 240 connected to the sensor electrodes 206 of the second to fourth rows, resulting in secondary potential changes in the sensor electrodes 206 of the second to fourth rows as well. That is, without relying on the coordinates of the input unit, it is possible to detect large potential changes in the sensor electrode 206 approaching the input unit while simultaneously causing almost identical secondary potential changes for other sensor electrodes 206 in the column where the sensor electrodes 206 are located. As a result, even when the input unit is close to adjacent sensor electrodes 206 in the row direction, the coordinate dependence of the input unit on the secondary potential changes can be eliminated, and the coordinates of the input unit can be accurately determined.

[0093] Preferably, the auxiliary wiring 240 is configured such that the end opposite to the terminal 208a of the auxiliary wiring 240 (the end opposite to the end connected to the sensor electrode 206) is located in the sensor frame region 212. Figure 14 Alternatively, the auxiliary wiring 240 can be configured such that its end exists within the sensor frame region 212 and is located outside the display region 120 (i.e., the frame region). The length L of the portion of the auxiliary wiring 240 extending from the end of the sensor region 210 or the display region 120 toward the side opposite to the terminal 208a is preferably 1 mm or more and 1 cm or less. In this way, by controlling the position of the end of the auxiliary wiring 240, even if the input unit is close to the end of the display region 120, the virtual capacitance formed between the auxiliary wiring 240 and the input unit is ensured. Therefore, the same detection accuracy as other areas of the sensor region 210 (e.g., near the center) can be maintained.

[0094] Furthermore, although the sensor wiring 208 is small in width, it can function as a sensor electrode by applying a pulsed AC voltage. Thus, when the sensor electrode 206 and the sensor wiring 208 are considered together as a single sensor electrode, even... Figure 13 The size of the sensor electrode 206 will also differ when viewed in the row direction. In contrast, Figure 14In this configuration, an auxiliary wiring 240 is added to the aforementioned sensor electrode 206, extending in a direction separate from the terminal 208a. Specifically, the auxiliary wiring 240-4 connected to the sensor electrode 206-4 closest to the detector 222 extends in a direction separate from the detector 222 and passes between other sensor electrodes 206. On the other hand, the auxiliary wiring 240-1 connected to the sensor electrode 206-1 located furthest from the detector 222 is extremely short. By adopting this configuration, both the sensor wiring 208 and the auxiliary wiring 240 function as part of the sensor electrode 206 (the sensor electrode connected to the detector 222). Therefore, the areas of the functional portions of the sensor electrodes 206 are almost identical, thereby reducing the capacitance difference caused by the difference in distance from the detector 222. It should be noted that the sensor electrode 206-1 located furthest from the detector 222 can also be configured without auxiliary wiring.

[0095] (3) Variation Example 3

[0096] Non-contact sensors are more susceptible to electrical interference from the display module 110 compared to conventional contact sensors. To mitigate this interference, multiple shielding electrodes can be arranged around the sensor area 210. A specific configuration is shown in... Figure 15 and Figure 16 middle. Figure 15 This is a schematic top view including two sides of the sensor substrate 202. Figure 16 Based on sensor region 210, and Figure 15 The area shown is a schematic top view of the area relative to the area shown.

[0097] As shown in these figures, a shielding electrode (first shielding electrode) 242 can be provided in each column. The shielding electrode 242 is provided in the sensor frame region 212 on the side opposite to the side of the sensor region 210 where the terminal 208a is arranged. The shielding electrode 242 is configured not to overlap with the display region 120. In other words, all of the multiple pixels 116 are exposed from the shielding electrode 242. When the end of the auxiliary wiring 240 connected to the sensor electrode 206 is arranged in the sensor frame region 21, the shape or arrangement of the shielding electrode 242 can be adjusted so that the end overlaps with the shielding electrode 242 provided in the same column in both the row and column directions. A pulsed AC voltage in phase with the sensor electrode 206 is also applied to the shielding electrode 242. Therefore, multiple shielding electrodes 242 can be electrically connected to the multiple shielding wirings 238 as shielding wirings (first shielding wirings). The shielding electrodes 242 do not contribute to determining the coordinates of the input unit, so the shielding wirings 238 do not need to be connected to the detector 222.

[0098] Alternatively, a pair of shielding electrodes (second shielding electrodes) 244 can be arranged together with or in place of shielding electrode 242 in each row. The pair of shielding electrodes 244 are configured to sandwich all sensor electrodes 206 in each row. The shielding electrodes 244 are also configured not to overlap with the display area 120. Therefore, all pixels 116 are exposed from the shielding electrodes 244. Each shielding electrode 244 is electrically connected to a shielding wiring (second shielding wiring) 246. Terminals 246a of the shielding wiring 246 are formed on one side of the sensor frame area 212 where terminals 208a of the sensor wiring 208 are formed. Terminals 246a are connected to the first connector 218, thereby enabling the shielding wiring 246 to receive a voltage supply from the power supply circuit 220. A pulsed AC voltage in phase with the sensor electrode 206 is applied to each shielding electrode 244. Similar to shielding electrode 242, shielding electrode 244 does not contribute to determining the coordinates of the input unit, therefore the shielding wiring 246 may not be connected to the detector 222. Although not illustrated, similar to sensor wiring 208, each shielded wiring 246 does not overlap with any of the shielded electrodes 244 except for the shielded electrode 244 to which it is connected, and is exposed. Alternatively, each shielded wiring 246 does not overlap with any of the shielded electrodes 244, and is exposed.

[0099] Similar to sensor electrode 206, auxiliary wiring (auxiliary shielding wiring) 248 can also be connected to shielding electrode 244. That is, auxiliary shielding wiring 248, corresponding to multiple shielding electrodes 244, can be disposed in sensor frame region 212. One end of each auxiliary shielding wiring 248 is electrically connected to the corresponding shielding electrode 244, and each auxiliary shielding wiring 248 extends in the opposite direction to terminal 246a. The other end of the auxiliary shielding wiring 248 is not connected to other conductive components.

[0100] Thus, in Modification 3, shielding electrodes 242 and / or 244 are provided in the sensor frame region 212. Therefore, even when the input unit is close to the end of the sensor region 210, a uniform electric field is generated between the input unit and the sensor region 210. Since the electric field overlapping with the sensor electrode 206 in this electric field is detected as a capacitance change, bias-free detection is possible. In addition, since the formation of capacitance between the outer side of the sensor region 210 and the input unit can be suppressed, the detection accuracy is not reduced. Furthermore, by providing shielding electrodes 242 and / or 244, the same configuration as the sensor region 210 can be constructed on the outer side of the display region 120. Therefore, not only can the detection sensitivity at the end of the display region 120 be maintained, but the influence from the display module 110 can also be effectively shielded.

[0101] In addition, multiple shielding electrodes 242 and / or shielding electrodes 244 are provided. When a single shielding electrode is provided in the sensor frame region 212, its influence extends to the entire periphery of the sensor region 210 when the input unit approaches the end of the sensor region 210. However, by providing multiple shielding electrodes 242 and / or multiple shielding electrodes 244, the decrease in the potential variation of the sensor electrode 206 that occurs when the input unit approaches the end of the sensor region 210 can be limited to a localized area. Therefore, detection accuracy can be maintained even at the end of the sensor region 210. Consequently, the coordinates of the input unit can be determined more accurately.

[0102] In the case where a pulsed AC voltage is supplied to the shielding electrode 242 via the shielding wiring 238, such as Figure 17A As shown, the resistance adjustment section 238b in the shielding wiring 238 can also be formed between the terminal 238a and the shielding electrode 242. The resistance adjustment section 238b can be provided in the sensor region 210 or in the sensor frame region 212. The resistance adjustment section 238b can be formed in a way that takes into account the capacity of the shielding electrode 242 so that the time constant of the shielding electrode 242 is the same as or substantially the same as the time constant of the other sensor electrodes 206. Alternatively, the resistance adjustment section 238b is not provided in the shielding wiring 238, but is formed in all the sensor wiring 208 connected to the sensor electrode 206, so that the time constants of the shielding electrode 242 and the sensor electrode 206 can be made consistent in each column.

[0103] Similarly, as Figure 17B As shown, for the shielded wiring 246 connected to the shielded electrode 244, a resistance adjustment section 246b can also be provided between the shielded electrode 244 and the terminal 246a. Similar to the resistance adjustment section 238b, the resistance adjustment section 246b can also be formed by taking into account the capacity of the shielded electrode 244 in a way that makes the time constant of the shielded electrode 244 the same as or substantially the same as the time constant of the other sensor electrodes 206. Alternatively, as... Figure 18 As shown, at least one notch 244a can be used to replace the formation of the resistance adjustment portion 246b, or can be provided together with the resistance adjustment portion 246b on all or at least one shielding electrode 244. The terminal 246a of the shielding wiring 246 is also disposed on one side of the terminal 208a in the sensor region 210. Therefore, the notch 244a is formed such that the greater the distance from the terminal 246a to the shielding electrode 244, the smaller its area.

[0104] Although not illustrated, the resistance of the shielding electrode 242 can be adjusted by replacing the resistance adjustment section 238b with a notch or by providing it together with the resistance adjustment section 238b on the shielding electrode 242. The resistance can be adjusted simply by adjusting the area of ​​the notch to have the same or substantially the same time constant as the sensor electrode 206. It should be noted that if the shielding wiring 238 connected to the shielding electrode 242 does not have a resistance adjustment section 238b, and the shielding electrode 242 does not have a notch, all sensor wiring 208 connected to the sensor electrode 206 can have a resistance adjustment section 208b, or the notch 206a can be formed together with or in place of the resistance adjustment section 208b on all sensor electrodes 206 to have the same or substantially the same time constant as the shielding electrode 242.

[0105] The above-described embodiments are implementations of the present invention, and can be appropriately combined and implemented as long as they do not contradict each other. Furthermore, based on the display devices of each embodiment, any additions, deletions, or design changes made by those skilled in the art to appropriate constituent elements, or additions, omissions, or changes to processes, are all included within the scope of the present invention, provided they embody the spirit of the invention.

[0106] Even if the effects are different from those of the embodiments described above, the effects that are obvious in the description of this specification or that can be easily predicted by those skilled in the art are of course understood as effects brought about by the present invention.

Claims

1. A sensor module, comprising: A sensor substrate having a sensor region and a sensor border region surrounding the sensor region; Multiple sensor electrodes are located on the sensor area and arranged in multiple rows and columns; Multiple sensor wirings are respectively associated with multiple sensor electrodes and electrically connected to their respective sensor electrodes, and each has a terminal on the sensor frame area; as well as Multiple shielded wirings, which extend in the column direction and pass through multiple rows. Multiple terminals are arranged on one side of the sensor area. In each column, at least one of the sensor wirings connected to the sensor electrodes has a resistance adjustment section. In the sensor wiring having the resistance adjustment section, the resistance of the resistance adjustment section is higher than the resistance of other parts. In each row, the sensor electrodes alternate with the shielding wiring. A pulsed AC voltage in phase with the plurality of sensor electrodes is applied to the plurality of shielded wirings.

2. The sensor module according to claim 1, wherein, In each column, all of the multiple sensor wirings connected to the multiple sensor electrodes except for the longest sensor wiring have the resistance adjustment section, and the greater the distance between the terminal and the sensor electrode of the sensor wiring, the smaller the resistance of the resistance adjustment section.

3. The sensor module according to claim 1, wherein, In each column, each of the multiple sensor wirings connected to the multiple sensor electrodes has a resistance adjustment section, and the resistance of the resistance adjustment section decreases as the distance between the terminal and the sensor electrode increases.

4. The sensor module according to claim 1, wherein, The resistance of the wiring of the multiple sensors is the same as that of each other.

5. A sensor module, comprising: A sensor substrate having a sensor region and a sensor border region surrounding the sensor region; Multiple sensor electrodes are located on the sensor area and arranged in multiple rows and columns; Multiple sensor wirings are respectively associated with multiple sensor electrodes and electrically connected to their respective sensor electrodes, and each has a terminal on the sensor frame area; as well as Multiple shielded wirings, which extend in the column direction and pass through multiple rows. Multiple terminals are arranged on one side of the sensor area. In each column, at least one of the plurality of sensor electrodes has at least one cutout. In each row, the sensor electrodes alternate with the shielding wiring. A pulsed AC voltage in phase with the plurality of sensor electrodes is applied to the plurality of shielded wirings.

6. The sensor module according to claim 5, wherein, In each column, all of the plurality of sensor electrodes except those connected to the longest sensor wiring have at least one cutout, and the larger the distance of the sensor electrode from the terminal, the smaller the area of ​​the at least one cutout.

7. The sensor module according to claim 5, wherein, In each column, multiple sensor electrodes have at least one cutout, and the larger the distance of the sensor electrode from the terminal, the smaller the area of ​​the at least one cutout.

8. A display device comprising: Display modules including array substrates with multiple pixels; and The sensor module on the display module The sensor module includes: A sensor substrate having a sensor region and a sensor border region surrounding the sensor region; Multiple sensor electrodes are located on the sensor area and arranged in multiple rows and columns; Multiple sensor wirings are respectively associated with multiple sensor electrodes and electrically connected to their respective sensor electrodes, and each has a terminal on the sensor frame area; Multiple shielded wirings, which extend in the column direction and pass through multiple rows. Multiple terminals are arranged on one side of the sensor area. In each column, at least one of the sensor wirings connected to the sensor electrodes has a resistance adjustment section. In the sensor wiring having the resistance adjustment section, the resistance of the resistance adjustment section is higher than the resistance of other parts. In each row, the sensor electrodes alternate with the shielding wiring. A pulsed AC voltage in phase with the plurality of sensor electrodes is applied to the plurality of shielded wirings.

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