KR102625025B1 - Display device - Google Patents

Abstract

Examples include a display panel; a first substrate and a second substrate electrically connected to the display panel; a connecting member connecting the first substrate and the second substrate; a pressing part that pressurizes the connecting member; A sensor unit that detects a pressure level on the connection member; and a control unit that adjusts the size of a signal moving to the display panel through the connection member according to the pressure level.

Description

Display device {DISPLAY DEVICE}

The embodiment relates to a display device.

As the information society develops, the demand for display devices for displaying images is increasing in various forms, and in recent years, liquid crystal display devices (LCDs), plasma display panels (PDPs), and organic light emitting display devices have been growing. Various display devices such as (OLED: Organic Light Emitting Display Device) are being used.

The display device includes a display panel that defines pixels at the intersection of a plurality of gate lines and a plurality of data lines, a gate driver that drives a plurality of gate lines, a data driver that includes a plurality of data drive integrated circuits that drive a plurality of data lines, a gate driver, and It includes a timing control unit that supplies various control signals to the data driver and a voltage generator that generates a reference voltage and supplies it to the data driver.

Additionally, the display device includes source printed circuit boards (S-PCBs) including source driver integrated circuits. At this time, due to a decrease in the thickness or width of the display device, there is a limit to the wiring or bonding of the printed circuit boards being limited to a specific area.

An embodiment provides a display device that includes a plurality of source printed circuit boards and improves noise generated when the wires connecting them are pressed together.

Additionally, a display device with improved signal reduction is provided.

The problem to be solved in the embodiment is not limited to this and also includes purposes and effects that can be understood from the means of solving the problem or the embodiment described below.

A display device according to an embodiment of the present invention includes a display panel; a first substrate and a second substrate electrically connected to the display panel; a connecting member connecting the first substrate and the second substrate; a pressing part that pressurizes the connecting member; A sensor unit that detects a pressure level on the connection member; and a control unit that adjusts the size of a signal moving to the display panel through the connection member according to the pressure level.

The connecting member includes a first connecting portion; And it may include a second connection part disposed adjacent to the first connection part.

The connection member may include an overlapping area where the first connection part and the second connection part overlap.

The sensor unit may detect the level of pressure applied to the overlapping area.

The control unit may divide the overlapping area into a plurality of areas and equally adjust the signal amplification ratio for each of the plurality of divided areas.

The control unit may increase the size of the signal when the pressure level is greater than a preset threshold.

The second connection part may have a length greater than the length of the first connection part.

It may further include a circuit film on which a driving circuit is mounted, and the display panel may be electrically connected to the first substrate and the second substrate through the circuit film.

The circuit film may be folded so that the display panel faces the first substrate and the second substrate.

The pressing portion may be located between the first substrate and the second substrate.

The first connection part may not overlap the second connection part.

The first connection part may be disposed between the first substrate and the second substrate.

According to an embodiment, a display device that includes a plurality of source printed circuit boards and improves noise generated when the wiring connecting them is pressed can be implemented.

Additionally, a display device with improved signal reduction can be manufactured.

The various and beneficial advantages and effects of the present invention are not limited to the above-described content and will be more easily understood through description of specific embodiments of the present invention.

1 is a system configuration diagram of a display device according to an embodiment of the present invention;
Figure 2 is an example system implementation of a display device according to an embodiment;
3 is a diagram illustrating main driving-related functions and main driving-related signals of a display device according to an embodiment;
4 is a diagram illustrating one side of a display device according to an embodiment;
Figure 5 is an enlarged view of part A in Figure 4,
Figure 6 is a side view of Figure 5;
Figure 7 is a plan view showing a substrate and a connecting member according to an embodiment;
8A and 8B are diagrams illustrating a method of driving a display device according to an embodiment;
9 is a diagram illustrating driving of a connection member in a display device according to another embodiment;
10 is a diagram explaining a connection member in a display device according to another embodiment;
11 is a diagram explaining a connection member in a display device according to another embodiment;
FIG. 12 is a diagram explaining a connection member in a display device according to a modified example.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

However, the technical idea of the present invention is not limited to some of the described embodiments, but may be implemented in various different forms, and one or more of the components may be selectively combined and substituted between the embodiments as long as it is within the scope of the technical idea of the present invention. You can use it.

In addition, terms (including technical and scientific terms) used in the embodiments of the present invention are interpreted as meanings that can be generally understood by those skilled in the art to which the present invention pertains, unless specifically defined and described. The meaning of commonly used terms, such as terms defined in a dictionary, can be interpreted by considering the contextual meaning of the related technology.

Additionally, the terms used in the embodiments of the present invention are for describing the embodiments and are not intended to limit the present invention.

As used herein, the singular may also include the plural unless specifically stated in the phrase, and when described as “at least one (or more than one) of A and B C”, one or more of all combinations of A B C may include.

Additionally, terms such as first, second, A, B (a), (b) may be used when describing the components of the embodiment of the present invention.

These terms are only used to distinguish the component from other components and are not limited to the essence, order, or order of the component.

And when a component is described as 'connected', 'coupled' or 'connected' to another component, the component is not only directly connected or connected to that other component, but also between that component and that other component. It can also include cases of being 'connected', 'combined', or 'connected' due to another component in .

Additionally, when described as being formed or disposed "above" or "below" each component, "above" or "below" means not only when two components are in direct contact with each other, but also when two or more components are in direct contact with each other. It also includes cases where another component is formed or placed between two components. In addition, when expressed as "top (above) or bottom (bottom)", it can include not only the upward direction but also the downward direction based on one component.

FIG. 1 is a system configuration diagram of a display device according to an embodiment of the present invention, FIG. 2 is an exemplary system implementation of a display device according to an embodiment, and FIG. 3 is a diagram showing main driving-related functions and main driving-related functions of a display device according to an embodiment. This is a diagram explaining the signal.

Referring to FIG. 1, a display device 100 according to an embodiment has a plurality of data lines (DL) and a plurality of gate lines (GL) arranged, and a plurality of data lines (DL) and a plurality of gate lines (GL) are provided. A display panel 110 with a plurality of subpixels (SP: Sub Pixels) arranged, a source driving circuit 120 that drives a plurality of data lines DL, and a plurality of gate lines GL. It includes a gate driving circuit 130 that controls the source driving circuit 120 and a driving controller 140 that controls the gate driving circuit 130.

The driving controller 140 may control the source driving circuit 120 and the gate driving circuit 130 by supplying various control signals to the source driving circuit 120 and the gate driving circuit 130.

The driving controller 140 starts scanning according to the timing implemented in each frame, converts the video signal input from the outside to fit the data signal format used in the source driving circuit 120, and outputs the converted video data, Data operation is controlled at an appropriate time according to the scan.

The driving controller 140 may be a timing controller used in typical display technology, or may be a control device that performs other control functions, including a timing controller.

The driving controller 140 may be implemented as a separate component from the source driving circuit 120, or may be implemented as an integrated circuit together with the source driving circuit 120.

The source driving circuit 120 drives the multiple data lines DL by supplying a data voltage to the multiple data lines DL. Here, the source driving circuit 120 is also called a data driving circuit.

The gate driving circuit 130 sequentially drives the plurality of gate lines GL by sequentially supplying scan signals to the plurality of gate lines GL. Here, the gate driving circuit 130 is also called a scan driver.

The gate driving circuit 130 sequentially supplies scan signals of on voltage or off voltage to a plurality of gate lines GL under the control of the driving controller 140.

When a specific gate line is opened by the gate driving circuit 130, the source driving circuit 120 converts the image data received from the driving controller 140 into an analog data voltage and supplies it to a plurality of data lines DL. .

As shown in FIG. 1, the source driving circuit 120 may be located only on one side (e.g., the upper or lower side) of the display panel 110, and in some cases, the source driving circuit 120 may be located on the display panel 110 depending on the driving method, panel design method, etc. It may be located on both sides (e.g., upper and lower sides).

As shown in FIG. 1, the gate driving circuit 130 may be located only on one side (e.g., left or right) of the display panel 110, and in some cases, the gate driving circuit 130 may be located on the display panel 110 depending on the driving method, panel design method, etc. ) may be located on both sides (e.g., left and right).

The above-described driving controller 140 includes a vertical synchronization signal (Vsync), a horizontal synchronization signal (Hsync), a data enable signal (DE), and various clock signals (CLOCK) in relation to the video input to the video signal. Various timing signals (input signals) can be input from the outside (e.g., the host 150).

The driving controller 140 uses a vertical synchronization signal (Vsync), a horizontal synchronization signal (Hsync), a data enable signal (DE), and a clock signal to control the source driving circuit 120 and the gate driving circuit 130. A timing signal is input, various control signals (data driving control signal, gate driving control signal) are generated and output to the source driving circuit 120 and the gate driving circuit 130.

For example, the drive controller 140 uses a gate start pulse (GSP: Gate Start Pulse), a gate shift clock (GSC), and a gate output enable signal (GOE) to control the gate drive circuit 130. : Outputs various gate driving control signals including Gate Output Enable).

Here, the gate start pulse (GSP) controls the operation start timing of the gate driving circuit 130. The gate shift clock (GSC) is a clock signal input to the gate driving circuit 130 and controls the shift timing of the scan signal (gate pulse). The gate output enable signal (GOE) specifies gate output timing information of the gate driving circuit 130.

In addition, the drive controller 140 uses a source start pulse (SSP), a source sampling clock (SSC), and a source output enable signal (SOE) to control the source drive circuit 120. Outputs various data driving control signals, including Output Enable.

Here, the source start pulse (SSP) controls the data sampling start timing of the source driving circuit 120. The source sampling clock (SSC) is a clock signal that controls the sampling timing of data in the source driving circuit 120. The source output enable signal (SOE) controls the data output timing of the source driving circuit 120.

Referring to FIG. 2 , the source driving circuit 120 may include at least one source driver integrated circuit (SDIC) and drive a plurality of data lines DL. Here, the source driving integrated circuit (SDIC) is also called a source driving chip.

Each source driving integrated circuit (SDIC) is connected to a bonding pad of the display panel 110 using a tape automated bonding (TAB) method or a chip on glass (COG) method. It may be placed directly on the display panel 110, or in some cases, may be integrated and placed on the display panel 110.

Additionally, as shown in FIG. 2, each source driving integrated circuit (SDIC) may be implemented using a chip on film (COF) method mounted on a circuit film (SF).

The gate driving circuit 130 may include at least one gate driver integrated circuit (GDIC) and drive a plurality of gate lines GL. Here, the gate driving integrated circuit (GDIC) is also called a gate driving chip.

Each gate driving integrated circuit (GDIC) is connected to a bonding pad of the display panel 110 using a tape automated bonding (TAB) method or a chip on glass (COG) method, or is integrated into the display panel 110. It may be deployed.

Additionally, each gate driving integrated circuit (GDIC) may be implemented in a chip-on-film (COF) method mounted on a film (GF) connected to the display panel 110, and as shown in FIG. 2, a gate-in-panel It may be implemented as a (Gate In Panel, GIP) type and placed directly on the display panel 110.

Below, for convenience of explanation, it is assumed that the plurality of gate driving integrated circuits (GDIC) included in the gate driving circuit 130 are gate-in-panel type gate driving integrated circuits.

In addition, below, the gate-in-panel type gate driving integrated circuit (GDIC) is described as a panel-embedded gate driving chip (GIP).

The display device 100 according to an embodiment includes at least one source printed circuit board (SPCB) necessary for circuit connection to at least one source driving integrated circuit (SDIC), control components, and various It may include a control printed circuit board (CPCB) for mounting electrical devices.

In each source printed circuit board (SPCB), a plurality of circuit films (SF) on which a source driving integrated circuit (SDIC) is mounted may be connected. Accordingly, each source printed circuit board (SPCB) may be electrically connected to the display panel 110 through a plurality of circuit films (SF).

Additionally, each source printed circuit board (SPCB) may be electrically connected to each other through the first connection member (CB1). As the size of the display panel increases, the number of source printed circuit boards (SPCBs) and the number of first connection members (CB1) may also change. Accordingly, it should be understood that as the size of the display device or display panel increases, the number of first connection members CB1 may change. In addition, hereinafter, there may be a plurality of source printed circuit boards (SPCBs), and are referred to as a first board (SB1), a second board (SB2), a third board (SB3), etc.

The first connection member CB1 may be positioned to face the plurality of circuit films SF. For example, the circuit film SF may be disposed on one side of the source printed circuit board SPCB, and the first connection member CB1 may be disposed on the other side opposite the one side.

The first connection member CB1 may be, for example, a flexible printed circuit (FPC), a flexible flat cable (FFC), or the like.

The control printed circuit board (CPCB) includes a driving controller 140 that controls the operations of the source driving circuit 120 and the gate driving circuit 130, a display panel 110, a source driving circuit 120, and a gate driving circuit. A power controller that supplies various voltages or currents or controls various voltages or currents to be supplied may be mounted at (130). In addition, the control unit (CL), which will be described later, is located on the control printed circuit board (CPCB) and can easily amplify various voltages or currents provided to the source driving circuit 120, etc. A detailed explanation of this will be provided later.

Additionally, this control printed circuit board (CPCB) may be connected in a circuit manner to at least one source printed circuit board (SPCB) through the second connection member (CB2).

The second connection member CB2 may be, for example, a flexible printed circuit (FPC) or a flexible flat cable (FFC).

Additionally, the driving controller 140 may be implemented by being integrated with a source driving integrated circuit (SDIC).

FIG. 3 is a diagram illustrating main driving-related functions and main driving-related signals of a display device according to an embodiment.

Referring to FIG. 3, the display device 100 according to the embodiment may include six source driving integrated circuits (SDIC #1, SDIC #2, SDIC #3, SDIC #4, SDIC #5, and SDIC #6). This can be done, and will be explained below based on this. And the data voltage VDATA, which is a data driving control signal, may be applied through the source driving integrated circuit ((SDIC #1, SDIC #2, SDIC #3, SDIC #4, SDIC #5, SDIC #6).

In addition, the display device 100 according to the embodiment includes 10 panel-embedded gate driving chips (GIP #L1, GIP #L2, GIP #L3, GIP #L4, GIP #L5, GIP #R1, GIP #R2, GIP # R3, GIP #R4, GIP #R5) and will be described below based on this. Via 10 panel built-in gate drive chips (GIP #L1, GIP #L2, GIP #L3, GIP #L4, GIP #L5, GIP #R1, GIP #R2, GIP #R3, GIP #R4, GIP #R5) A gate signal may be applied.

Here, among the 10 panel-embedded gate driving chips (GIP #L1 to GIP #L5, GIP #R1 to GIP #R5), 5 panel-embedded gate driving chips (GIP #L1, GIP #L2, GIP #L3, GIP # L4, GIP #L5) are built into the left side of the display panel 110, and the remaining five panel-embedded gate driving chips (GIP #R1, GIP #R2, GIP #R3, GIP #R4, GIP #R5) are built into the display panel. It can be built on the right side of (110). However, it is not limited to these locations.

FIG. 4 is a diagram showing one side of a display device according to an embodiment, FIG. 5 is an enlarged view of portion A in FIG. 4, and FIG. 6 is a side view of FIG. 5.

Referring to FIGS. 4 and 5 , the display device may further include a cover BC. Additionally, the above-described components (display panel, gate driving circuit, source driving circuit, driving controller, etc.) may be located within the cover BC.

This cover BC may include a first area A1 on which the display panel 110 rests and a second area A2 disposed below the first area A1. The second area A2 may be located outside the cover BC. A first connection member, etc. may be seated in this second area A2. Furthermore, according to the embodiment, the first connection member located in the second area A2 may be located in the groove GR formed in the first area A1 of the cover BC. Accordingly, the width of the second area A2 is reduced as the first connection member is disposed in the first area A1, thereby minimizing the bezel of the display device. Details of the above-described configuration will be described below.

Additionally, a protrusion PR may be disposed in the groove GR of the cover BC. The rigidity of the cover BC can be maintained through the protrusion PR.

Additionally, the protrusion PR extends from the first area A1 toward the second area A2 and may include a pressing part PS that presses the above-described first connection member. Accordingly, the first connection member CB1 can be easily seated within the cover BC.

In addition, various heat dissipation members, etc. may be disposed on the cover BC, so that the first substrate SB1, the second substrate SB2, the source driving integrated circuit (SDIC), and the first connection member CB1 are exposed to the outside. It may not be exposed. However, the following description will be based on the exposure of the first substrate SB1, the second substrate SB2, the source driving integrated circuit (SDIC), and the first connection member CB1.

Additionally, in an embodiment, the first connection member CB may electrically connect the first board SB1 and the second board SB2.

At least a portion of the above-described groove GR may be located between the first substrate SB1 and the second substrate SB2. Additionally, the first connection member CB1 may be disposed in the groove GR so that the first substrate SB1 and the second substrate SB2 overlap at least partially with the source driving integrated circuit SDIC. At this time, the source driving integrated circuit (SDIC) is folded to face the first and second substrates SB1 and SB2, and directly drives the first and second substrates SB2 and the source within the display device. The space where the circuit (SDIC) sits can be minimized.

Additionally, at least a portion of the first substrate SB1 and the second substrate SB2 may be located inside the source driving integrated circuit SDIC. That is, the first substrate SB1 and the second substrate SB2 may be located between the source driving integrated circuit SDIC and the groove GR.

Additionally, since the protrusion PR is located between the first board SB1 and the second board SB2, the first connection member CB1 can be pressed in a balanced manner through the press part PS. Accordingly, the reliability of the device can be improved.

Additionally, the first connection member CB1 may be composed of a plurality of connection parts.

In an embodiment, the first connection member CB1 may include a first connection part CB1a and a second connection part CB1b. The first connection part CB1a is disposed adjacent to the second connection part CB1b and may be longer than the second connection part CB1b. Here, the length may be the length in the direction from the first substrate to the second substrate.

In an embodiment, the first connection part CB1a may overlap the second connection part CB1b at least partially in the vertical direction. Likewise, the second connection portion CB1b may overlap at least partially with the first connection portion CB1a.

Accordingly, the first connection member CB1 may include an overlap area PP where the first connection part CB1a and the second connection part CB1b overlap each other. With this configuration, the display device can be miniaturized.

Additionally, a conductive film may be additionally disposed between the first connection part CB1a and the second connection part CB1b. Accordingly, even when pressure is applied to the first connection part CB1a and the second connection part CB1b, noise between the first connection part CB1a and the second connection part CB1b can be reduced.

In addition, the overlapping area PP is arranged to overlap at least partially with the protrusion PR and the pressing part PS, and the pressing part PS is disposed at the first connection part CB1a and the second connection part CB1b on the overlapping area PP. can be pressurized. With this configuration, the first connection member CB1 can be easily seated within the cover BC and the reliability of the display device can be improved.

The sensor unit SS may be disposed in the overlapping area PP. The sensor unit SS may sense the pressure applied to the first connection member CB1 by the protrusion PR. The pressure below corresponds to the pressurization level.

This sensor unit (SS) may include a pressure sensor. Pressure sensors include capacitive pressure sensors, piezoelectric pressure sensors, microelectromechanical system (MEMS) based pressure sensors, pressure transducers, silicon-based pressure sensors, strain gauges, capacitive pressure sensors, and optical pressure sensors. , an inductive pressure sensor, or a pressure sensor implemented using other suitable pressure sensing technology.

Referring to FIG. 6, the display panel 110 is disposed at the bottom, and a source driving integrated circuit (SDIC) may be in contact with one end of the display panel 110. As described above, the display panel 110 and the source driving integrated circuit (SDIC) may be electrically connected.

Additionally, the source driving integrated circuit (SDIC) may be electrically connected with one end connected to the display panel 110 and the other end in contact with the first substrate SB1 and/or the second substrate SB2.

In an embodiment, the source driving integrated circuit (SDIC) may be folded so that the display panel 110 and the first substrate SB1 or the second substrate SB2 face each other. Accordingly, as described above, the width of the outer area of the display device can be minimized.

Additionally, the first connection member CB1 for electrical connection between the first substrate SB1 and the second substrate SB2 may extend inside the display panel 110 . The first connection member CB1 may be located inside the display panel 110 rather than the source driving integrated circuit (SDIC). In this specification, the inside may be a direction toward the center C1 of the display panel, and the outside may be a direction opposite to the inside.

Additionally, the first connection member CB1 may be pressed downward by the pressing portion PS of the cover BC and fixed to the cover BC.

FIG. 7 is a plan view showing a substrate and a connecting member according to an embodiment, and FIGS. 8A and 8B are diagrams explaining a method of driving a display device according to an embodiment.

Referring to FIG. 7 , source driving integrated circuits (SDIC #1 and SDIC #2) may be located on one side of the first substrate (SB1). The source driving integrated circuits (SDIC #1 and SDIC #2) may be electrically connected to the control printed circuit board (CPCB) through the first board (SB1) and the second connection member.

Additionally, source driving integrated circuits (SDIC #3 and SDIC #4) may be connected to one side of the second substrate (Sb2). Additionally, the first connection part CB1a and the second connection part CB1b may be connected to the other side of the first substrate SB1. Additionally, the first connection portion CB1a and the second connection portion CB1B may be connected to the other side of the second substrate SB2.

The source driving integrated circuits (SDIC #3, SDIC #4) are connected to the control printed circuit board (SDIC #3) through the second board (SB2), the first connection member (CB1), the first board (SB1), and the second connection member (CB2). CPCB) can be electrically connected.

As described above, the first connection member CB1 includes the first connection part CB1a and the second connection part CB1b, and may have an overlapping area PP.

More specifically, the first connection portion CB1a is connected to the first substrate SB1 and includes a 1-1 extension area K1 extending inward, and a first connection part CB1a extending in the horizontal direction from the 1-1 extension area K1. It may include a 1-2 extension area K2 and a 1-3 extension area K3 extending outward from the 1-2 extension area K2 and contacting the second substrate SB. The horizontal direction may be a direction from the first substrate to the second substrate.

And the second connection portion CB1b is connected to the first substrate SB1 and includes a 2-1 extension area O1 extending inward, and a 2-2 extension area extending horizontally from the 2-1 extension area O1. It may include an extension area O2 and a 2-3 extension area O3 extending outward from the 2-2 extension area O2 and contacting the second substrate SB.

The second connection part CB1b may be arranged to surround the first connection part CB1a. The length L2 of the second connection part CB1b may be greater than the length L1 of the first connection part Cb1. The lengths L2 and L1 may be from the first substrate SB1 to the second substrate SB2. The 1-1 extension area K1 and the 1-3 extension area K3 may be located between the 2-1 extension area O1 and the 2-3 extension area O3.

The internal signal wires of the first connection part CB1a and the second connection part CB1b may be located on the same side. That is, the signal wires SL1 and SL2 are connected in the 1-1st extension area K1, the 1-3rd extension area K3, the 2-1st extension area O1, and the 2-3rd extension area O3. It can be placed on the bottom. In contrast, in the 1-2nd extension area K2 and the 2-2nd extension area O2, signal wires SL1 and SL2 may be disposed on the top surface. With this configuration, signal overlap between signal wires in the first connection part CB1a and the second connection part CB1b can be minimized. In addition, interference between signal wires of the first connection part CB1a and the second connection part CB1b can be minimized by applying pressure, which will be described later.

As described above, the display device detects the pressure level of the first connection member through the sensor unit, and the size of the signal within the first connection member can be adjusted according to the pressure level detected by the control unit.

The sensor unit is disposed in the overlapping area PP and can detect the pressure applied by the pressing unit PS to the first connection member.

Additionally, the control unit may be located on a first or second board or a control printed circuit board (CPCB) within the display device. Alternatively, it may be located outside the display panel.

The control unit may receive the pressure level from the sensor unit and amplify the signal moving to the second board (SB2) and the source driving integrated circuit (SDIC #3, SDIC #4) through the first signal wire according to the pressure level. .

In an embodiment, the controller may increase the amplification ratio of the above-described signal as the pressure level increases. For example, the control unit may amplify the EPI signal (Embedded point to point interface signal) of the drive controller or increase the swing level to control the first and second boards. Hereinafter, the description will be based on the amplification of the EPI signal level.

The control unit according to the embodiment increases the size of the signal moving through the first connection member (CB1) to prevent the size of the signal from decreasing due to signal interference between the first connection part (CB1a) and the second connection part (CB1b) due to pressure. Compensation is possible. As a result, the display device according to the embodiment can be miniaturized and accurately transmit signals.

Referring to FIGS. 8A and 8B , the pressure level of the first connection member according to the embodiment may be different depending on the position. Accordingly, the control unit may amplify the EPI signal to different amplification degrees depending on the pressure level detected through the sensor unit. In embodiments, the degree of amplification may be linear with the pressure level.

According to an embodiment, the display device may detect the pressure level of the first connection member through the sensor unit while driving the display panel through a drive controller and a controller printed circuit board (S210).

And the control unit according to the embodiment may compare the pressure level received from the sensor with a preset threshold value (Pth). For example, if the pressure level is less than the preset threshold value (Pth), the control unit may not amplify the signal level.

If the pressure level is greater than the preset threshold, the control unit may amplify the signal level (EPI) (S230).

As a result, the display device according to the embodiment can easily compensate for signal interference (noise) caused by the pressure when the size of the display panel increases and the first connection member needs to be pressed, thereby performing accurate signal transmission.

FIG. 9 is a diagram illustrating driving of a connection member in a display device according to another embodiment.

Referring to FIG. 9, a display device according to another embodiment has a plurality of data lines (DL) and a plurality of gate lines (GL) arranged as the above-described components, and a plurality of data lines (DL) and a plurality of gate lines A display panel with a plurality of subpixels (SP: Sub Pixels) defined by (GL) arranged, a source driving circuit driving a plurality of data lines (DL), and a gate driving a plurality of gate lines (GL) It includes a driving circuit, a driving controller that controls the source driving circuit, and the gate driving circuit.

Additionally, the display device may include the above-described first substrate, second substrate, first connection member, second connection member, pressing unit, sensor unit, and control unit. The description of the above-mentioned components can be applied in the same manner except for the content described below.

Source driving integrated circuits (SDIC #1 and SDIC #2) may be located on one side of the first substrate (SB1). Additionally, the source driving integrated circuits (SDIC #1 and SDIC #2) may be electrically connected to the control printed circuit board (CPCB) through the first board (SB1) and the second connection member.

Source driving integrated circuits (SDIC #3 and SDIC #4) may be connected to one side of the second substrate (Sb2). In addition, the first connection part CB1a and the second connection part CB1b are connected to the other side of the first board SB1, and the first connection part CB1a and the second connection part CB1B are connected to the other side of the second board SB2. can be connected. Accordingly, the source driving integrated circuits (SDIC #3, SDIC #4) control printing through the second substrate (SB2), the first connection member (CB1), the first substrate (SB1), and the second connection member (CB2). It can be electrically connected to a circuit board (CPCB).

Additionally, the first connection member CB1 includes a first connection part CB1a and a second connection part CB1b, and may have an overlapping area PP. The second connection part CB1b may be arranged to surround the first connection part CB1a.

In an embodiment, the control unit may amplify the signal at a different amplification ratio according to the pressure level measured by the sensor unit in the overlap area PP.

In particular, the control unit may perform signal amplification differently depending on the length of the signal wires of the first and second substrates connected to the signal wires in the first connection member CB1.

In an embodiment, the controller may increase the amplification ratio of the above-described signal as the length of the signal wires of the first and second substrates increases. For example, a high-speed data line (HSD) may be disposed on the first substrate (SB1), and the high-speed data line (HSD) may be connected through the first connection portion (CB1a). However, the high-speed data line (HSD) may have the longest signal line length on the first board (SB1). At this time, even if the detection level pressed by the sensor unit is the same for each path, the control unit can amplify the signal in the path (PATH1) connected to the high-speed data line (HSD) at a higher amplification ratio than the path (PATH2) other than the above path. . With this configuration, noise generated depending on the length of the signal wires on the first and second substrates, which are multiple source printed circuit boards, can be compensated for and more accurate signal transmission can be performed.

Likewise, the sensor unit may be disposed in the overlapping area PP to detect the pressure applied by the protrusion PR to the first connecting member, and the control unit may detect the pressure passing through the first connecting member according to the pressure level on the overlapping area PP. The level of the signal can be amplified.

FIG. 10 is a diagram explaining a connection member in a display device according to another embodiment.

Referring to FIG. 10, a display device according to another embodiment includes a plurality of data lines (DL) and a plurality of gate lines (GL) as the above-mentioned components, and a plurality of data lines (DL) and a plurality of gates. A display panel with a plurality of subpixels (SP: Sub Pixels) defined by lines (GL) arranged, a source driving circuit that drives a plurality of data lines (DL), and a plurality of gate lines (GL) It includes a gate driving circuit, a source driving circuit, and a driving controller that controls the gate driving circuit.

Additionally, the display device may include the above-described first substrate, second substrate, first connection member, second connection member, pressing unit, sensor unit, and control unit. The description of the above-mentioned components can be applied in the same manner except for the content described below.

In an embodiment, the control unit may amplify the signal at a different amplification ratio according to the pressure level measured by the sensor unit in the overlap area PP. In particular, the control unit may divide the overlapping area within the first connection member CB1 into a plurality of areas and control the signal amplification ratio differently for each of the plurality of divided areas.

The control unit may divide the overlapping area into a plurality of areas and equally adjust the signal amplification ratio for each of the plurality of divided areas.

For example, the overlapping area PP may be divided into a first wiring area R1, a second wiring area R2, and a third wiring area R3. The second wiring area R2 may be located between the first wiring area R1 and the third wiring area R3.

The control unit may provide the same amplification ratio to the signal passing through each of the signal wires in the first wiring area (R1), the signal wire in the second wiring area (R2), and the signal wire in the third wiring area (R3). . That is, the signal through the signal wire in the first wiring region R1 may be amplified by the control unit at the same amplification ratio (eg, the first amplification ratio P1). Additionally, the signal through the signal wire in the second wire area R2 may be amplified by the control unit at the second amplification ratio P2. Additionally, the signal through the signal wire in the third wire area R3 may be amplified by the control unit at the third amplification ratio P3. In the drawing, the first to third amplification ratios P1 to P3 are shown to be different, but the amplification ratios may be the same or different depending on the pressure level in each area.

Additionally, the sensor unit can calculate the average pressure in each partitioned area as a pressure level. For example, the sensor unit may calculate the pressure level in each of the first wiring area (R1), the second wiring area (R2), and the third wiring area (R3).

With this configuration, even if a plurality of wires are located in an overlapping area, the pressure applied to the signal wire passing through each first connection member CB1 can be easily calculated. In addition, the amplification ratio can be easily reflected in the signals provided along each signal wire, allowing signal movement through the drive controller to be performed quickly and accurately.

FIG. 11 is a diagram explaining a connection member in a display device according to another embodiment.

Referring to FIG. 11, a display device according to another embodiment includes a plurality of data lines (DL) and a plurality of gate lines (GL) as the above-described components, and a plurality of data lines (DL) and a plurality of gates. A display panel with a plurality of subpixels (SP: Sub Pixels) defined by lines (GL) arranged, a source driving circuit that drives a plurality of data lines (DL), and a plurality of gate lines (GL) It includes a gate driving circuit, a source driving circuit, and a driving controller that controls the gate driving circuit.

Additionally, the display device may include the above-described first substrate, second substrate, first connection member, second connection member, pressing unit, sensor unit, and control unit. The description of the above-mentioned components can be applied in the same manner except for the content described below.

In an embodiment, the first connection part CB1a may be surrounded by the second connection part CB1b as described above. That is, the first connection part CB1a may be located inside the second connection part CB1b. Accordingly, the first connection part CB1a may not overlap with the second connection part CB1b. For example, the first connection part CB1a may be spaced apart from the second connection part CB1b by a predetermined distance. With this configuration, the length of the first connecting member can be minimized. Additionally, noise occurring between the first connection part CB1a and the second connection part CB1b can be reduced.

Additionally, as described above, a conductive member may be disposed between the first connection part and the second connection part to minimize noise between the first connection part and the second connection part.

Additionally, in the embodiment, the pressing unit PS may pressurize each of the first connection part CB1a and the second connection part CB1b. And the pressure level applied to the first connection part CB1a and the second connection part CB1b may be different or the same. In response to this, the control unit can adjust the size of the signal moving through the first connection portion CB1a according to the pressure level measured for the fourth region R4 pressed by the pressure portion PS among the first connection portions CB1a. You can.

In addition, the control unit can adjust the size of the signal moving through the second connection part CB1b according to the pressure level measured for the fifth area R5 pressed by the pressure part PS among the second connection parts CB1b. there is.

Additionally, the first connection portion CB1a and the second connection portion CB1b may be disposed on the same layer or on different layers. For example, the first connection part CB1a may be located on the second connection part CB1b. Conversely, the second connection part CB1b may be located on the first connection part CB1a.

FIG. 12 is a diagram explaining a connection member in a display device according to a modified example.

The display device according to the modified example has a plurality of data lines (DL) and a plurality of gate lines (GL) arranged as the above-described components, and is defined by the plurality of data lines (DL) and a plurality of gate lines (GL). A display panel with a plurality of subpixels (SP: Sub Pixels) arranged, a source driving circuit for driving a plurality of data lines (DL), a gate driving circuit for driving a plurality of gate lines (GL), and a source driving circuit. and a driving controller that controls the gate driving circuit.

Additionally, the display device may include the above-described first substrate, second substrate, first connection member, second connection member, pressing unit, sensor unit, and control unit. The description of the above-mentioned components can be applied in the same manner except for the content described below.

In an embodiment, the first connection part CB1a may be located inside the second connection part CB1b. Additionally, the first connection portion CB1a may be disposed between a plurality of substrates and overlap the plurality of substrates in a direction toward an adjacent substrate. In an embodiment, the first connection portion CB1a may be disposed between the first substrate SB1 and the second substrate SB2.

Accordingly, pressurization can be performed on only some of the connecting members. For example, since the first connection portion CB1a is disposed between the first substrate SB1 and the second substrate SB2, it may not be pressed by the pressing portion PS. However, the second connection portion CB1b may be pressed by the pressing portion PS. As a result, the control unit can adjust the size of the signal moving through the second connection part CB1b according to the pressure level measured for the sixth region R6 pressed by the pressure part PS among the second connection parts CB1b. there is.

Additionally, since the first connection portion CB1a is disposed between the first substrate SB1 and the second substrate SB2, it may not have a bent structure. Accordingly, the first connection portion CB1a may not be folded. In contrast, the second connection portion CB1b may have a bent structure and be folded. Accordingly, signal interference within the first connection portion CB1a can be reduced.

Additionally, the first connection part CB1a and the second connection part CB1b may not overlap. Accordingly, noise generation between the first connection part CB1a and the second connection part CB1b may be reduced. Furthermore, the first connection portion CB1a is disposed between the first substrate SB1 and the second substrate Sb2, so that the separation distance from the second connection portion CB1b may increase. Accordingly, noise generation between the first connection part CB1a and the second connection part Cb1b can be minimized. Although embodiments of the present invention have been described in more detail with reference to the attached drawings, the present invention does not necessarily apply to these embodiments. It is not limited, and various modifications may be made without departing from the technical spirit of the present invention. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but are for illustrative purposes, and the scope of the technical idea of the present invention is not limited by these embodiments. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive. The scope of protection of the present invention should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of rights of the present invention.

Claims (12)

display panel;
a first substrate and a second substrate electrically connected to the display panel;
a connecting member connecting the first substrate and the second substrate;
a pressing part that presses the connecting member;
A sensor unit that detects a pressure level on the connection member; and
A display device comprising: a control unit that adjusts the size of a signal moving to the display panel through the connection member according to the pressure level.
According to paragraph 1,
The connecting member includes a first connecting portion; and a second connection part disposed adjacent to the first connection part.
According to paragraph 2,
The connection member includes an overlapping area where the first connection part and the second connection part overlap.
According to paragraph 3,
A display device in which the sensor unit detects a pressure level applied to the overlapping area.
According to paragraph 4,
The display device wherein the control unit divides the overlapping area into a plurality of areas and equally adjusts the signal amplification ratio for each of the plurality of divided areas.
According to paragraph 1,
The display device wherein the control unit increases the size of the signal when the pressure level is greater than a preset threshold.
According to paragraph 2,
A display device wherein the second connection portion has a length greater than the length of the first connection portion.
According to paragraph 1,
It further includes a circuit film on which a driving circuit is mounted,
A display device wherein the display panel is electrically connected to the first substrate and the second substrate through the circuit film.
According to clause 8,
The circuit film is folded so that the display panel faces the first substrate and the second substrate.
According to paragraph 1,
The pressing portion is located between the first substrate and the second substrate.
According to paragraph 2,
A display device wherein the first connection portion does not overlap the second connection portion.
According to clause 11,
The first connection portion is disposed between the first substrate and the second substrate.

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