WO2021157859A1 - Electronic device comprising display, and method for correcting distortion of image displayed on same electronic device - Google Patents

Abstract

Disclosed is an electronic device comprising: a housing; a display; a display driving circuit; and a processor, wherein the processor sets one frame to be driven by the display and checks whether the display displays an execution screen of an application operating at, or below, a first driving frequency which is a specified driving frequency, and wherein the display driving circuit: sets a DA frame that supplies a data voltage to a driving transistor of each of a plurality of pixels and a DH frame that maintains a data voltage value written in an address section; and is set to control a time for simultaneously supplying light-emission signals to a plurality of lines connected to the plurality of pixels, in the DH frame.

Description

Electronic device including a display and method of improving distortion of an image displayed by the electronic device

Embodiments disclosed in this document relate to a technique for implementing an electronic device including a display and a method of improving distortion of an image displayed by the electronic device.

The electronic device may display an image through a display disposed on the surface of the housing. A plurality of pixels for displaying an image may be disposed on the display. The display may receive signals and voltages for displaying an image from a display driver IC (DDI). Each of the plurality of pixels may receive a data voltage corresponding to the brightness and color of an image to be displayed in a current frame from the display driving circuit. A driving transistor of the pixel is driven by the data voltage supplied from the current frame, so that a light emitting device such as an organic light emitting diode (OLED) may emit light with a specified brightness. Specifically, the data voltage is supplied to the source electrode of the driving transistor, and the brightness of the light emitting device driven by the driving transistor may be set by a voltage difference between the source electrode of the driving transistor and the gate electrode of the driving transistor.

Meanwhile, the user may move at least a partial area of an image displayed on the display area using an input means such as a finger, a touch pen, and/or a stylus on the display area. For example, by scrolling or flicking a part of the image, the user may check a part that was not recognized in the display area before moving the image.

When the scanning direction of the scan line and the moving direction of the image are different from each other, distortion occurs according to the movement of the image, so that the user can recognize the image distortion. For example, when scanning of a scan line is performed from right to left and the image is moved from top to bottom, the screen may be updated first for the right part of the image and the screen may be updated for the left part of the image later. Accordingly, a jelly phenomenon in which the left part of the image is wavy may occur, thereby reducing the visibility of the image.

Various embodiments disclosed in this document are intended to provide a method for reducing the jelly phenomenon of an image displayed on a display and an electronic device to which the method is applied.

An electronic device according to an embodiment disclosed in this document includes a housing, a display that is seen through at least a part of the housing and displays a screen using a plurality of pixels, a data voltage that drives each of the plurality of pixels, and a display driving circuit for providing a light emitting signal to the display, and a processor operatively connected to the display driving circuit and the sensor, wherein the processor sets one frame in which the display drives, and the display is configured to drive It is checked whether an execution screen of an application operating at a frequency equal to or less than a first driving frequency is displayed, and the display driving circuit provides the data voltage to the driving transistors of each of the plurality of pixels in the DA frame and the address period. It may be set to set a DH frame that maintains the data voltage value written in , and to control a time for simultaneously supplying the light emitting signal to a plurality of lines connected to the plurality of pixels in the DH frame.

In addition, the electronic device according to another exemplary embodiment disclosed in this document includes a housing, a display that is seen through at least a part of the housing, and displays a screen using a plurality of pixels, and data that drives each of the plurality of pixels a display driving circuit for providing a voltage and a light emitting signal to the display, and a processor operatively connected to the display driving circuit and the sensor, wherein the processor sets one frame in which the display drives, and the display It is checked whether an execution screen of an application operating below a first driving frequency, which is a specified driving frequency, is displayed, and the display driving circuit includes a DA frame that provides the data voltage to driving transistors of each of the plurality of pixels and the A DH frame maintaining the written data voltage value is set in the address period, the data voltage is written to the driving transistor in the entire DA frame, and the light emitting signal is applied to the plurality of pixels connected to the plurality of pixels in the DH frame. It can be set to feed the lines simultaneously.

In addition, an electronic device according to another exemplary embodiment disclosed in this document includes a housing, a display that is seen through at least a portion of the housing, displays a screen using a plurality of pixels, and a display that drives each of the plurality of pixels a display driving circuit for providing a data voltage and a light emitting signal to the display, and a processor operatively connected to the display driving circuit and the sensor, wherein the processor sets one frame in which the display drives, the display checks whether a screen that is still displayed during a specified time elapses, and the display driving circuit provides the data voltage to the driving transistor of each of the plurality of pixels, the DA frame, and the data written in the address period A DH frame maintaining a voltage value is set, the DH frame is set to be repeated a plurality of times after the DA frame, and the light emitting signal is transmitted to a plurality of pixels connected to the plurality of pixels in a GI section that is at least a part of the DH frame. It can be set to feed the lines simultaneously.

According to the embodiments disclosed in this document, since the leakage current characteristic of the pixel is improved and the light emitting signal can be simultaneously supplied to the plurality of pixels, the jelly phenomenon of the image displayed on the display can be reduced.

In addition, according to the embodiments disclosed in this document, it is possible to reduce the jelly phenomenon of an image displayed on a display by simultaneously supplying a light emitting signal to a plurality of pixels in a holding period that maintains a data voltage value written in an address period. .

In addition, according to the embodiments disclosed in this document, it is possible to increase the time for simultaneously supplying the emission signal to the plurality of pixels in the holding period, thereby reducing the driving frequency of the display and reducing power consumption.

In addition, various effects directly or indirectly identified through this document may be provided.

1 is a diagram illustrating an unfolded state of an electronic device according to an exemplary embodiment.

2 is a diagram illustrating a folded state of an electronic device according to an exemplary embodiment.

3 is an exploded perspective view of an electronic device according to an exemplary embodiment;

4A is a diagram illustrating a display of an electronic device according to a comparative example.

4B is a diagram illustrating a case in which a display of an electronic device is scrolled according to a comparative example.

4C is a diagram illustrating a case in which a display of an electronic device is scrolled according to a comparative example.

5 is a diagram illustrating a case in which a display of an electronic device is scrolled according to an exemplary embodiment.

6 is a circuit diagram illustrating a pixel of a display according to an exemplary embodiment.

7 is a diagram illustrating a first DA/GI frame and a second DA/GI frame of a display of an electronic device according to an exemplary embodiment.

8 is a diagram illustrating a DA/GI frame and a DH/GI frame of a display of an electronic device according to an exemplary embodiment.

9 is a diagram illustrating a DA frame and a DH/GI frame of a display of an electronic device according to an exemplary embodiment.

10 is a diagram illustrating a DA frame, a first DH frame, a second DH frame, and a third DH frame of a display of an electronic device according to an exemplary embodiment.

11 is a diagram illustrating a DA frame, a first DH frame, a second DH frame, a third DH frame, and a fourth DH frame of a display of an electronic device according to an exemplary embodiment.

12 is a block diagram of an electronic device in a network environment, according to various embodiments of the present disclosure;

13 is a block diagram of a display device according to various embodiments of the present disclosure;

In connection with the description of the drawings, the same or similar reference numerals may be used for the same or similar components.

Hereinafter, various embodiments of the present invention will be described with reference to the accompanying drawings. However, this is not intended to limit the present invention to specific embodiments, and it should be understood that various modifications, equivalents, and/or alternatives of the embodiments of the present invention are included.

1 is a diagram illustrating an unfolded state of an electronic device according to an exemplary embodiment. 2 is a diagram illustrating a folded state of an electronic device according to an exemplary embodiment.

1 and 2 , in an embodiment, the electronic device 10 includes a foldable housing 500 , a hinge cover 530 covering a foldable portion of the foldable housing, and the foldable housing. It may include a flexible or foldable display 100 (hereinafter, abbreviated as “display” 100 ) disposed in the space formed by 500 . In this document, the surface on which the display 100 is disposed is defined as the first surface or the front surface of the electronic device 10 . In addition, the opposite surface of the front surface is defined as the second surface or the rear surface of the electronic device 10 . In addition, a surface surrounding the space between the front and rear surfaces is defined as a third surface or a side surface of the electronic device 10 .

In one embodiment, the foldable housing 500 includes a first housing structure 510 , a second housing structure 520 including a sensor area 524 , a first rear cover 580 , and a second rear surface. A cover 590 may be included. The foldable housing 500 of the electronic device 10 is not limited to the shape and combination shown in FIGS. 1 and 2 , and may be implemented by a combination and/or combination of other shapes or parts. For example, in another embodiment, the first housing structure 510 and the first rear cover 580 may be integrally formed, and the second housing structure 520 and the second rear cover 590 may be integrally formed. can be formed.

In the illustrated embodiment, the first housing structure 510 and the second housing structure 520 may be disposed on both sides about the folding axis (axis A), and may have an overall symmetrical shape with respect to the folding axis A. . As will be described later, the angle or distance between the first housing structure 510 and the second housing structure 520 may vary depending on whether the electronic device 10 is in an unfolded state, a folded state, or an intermediate state. can In the illustrated embodiment, the second housing structure 520, unlike the first housing structure 510, further includes the sensor area 524 in which various sensors are disposed, but in other areas, the shape is symmetrical to each other. can have

In an embodiment, as shown in FIG. 1 , the first housing structure 510 and the second housing structure 520 may together form a recess for accommodating the display 100 . In the illustrated embodiment, due to the sensor area 524 , the recess may have at least two different widths in a direction perpendicular to the folding axis A.

For example, the recess is formed in (1) an edge of the sensor region 524 of the first part 510a parallel to the folding axis A of the first housing structure 510 and the sensor area 524 of the second housing structure 520 . a first width w1 between the first portion 520a, and (2) the second portion 510b of the first housing structure 510 and the sensor area 524 of the second housing structure 520 . It may have a second width w2 formed by the second portion 520b parallel to the folding axis A. In this case, the second width w2 may be formed to be longer than the first width w1. In other words, the first portion 510a of the first housing structure 510 and the first portion 520a of the second housing structure 520 having a mutually asymmetric shape form a first width w1 of the recess. and the second portion 510b of the first housing structure 510 and the second portion 520b of the second housing structure 520 having a mutually symmetrical shape form a second width w2 of the recess. can In an embodiment, the first part 520a and the second part 520b of the second housing structure 520 may have different distances from the folding axis A. The width of the recess is not limited to the illustrated example. In various embodiments, the recess may have a plurality of widths due to the shape of the sensor region 524 or the portion having the asymmetric shape of the first housing structure 510 and the second housing structure 520 .

In an embodiment, at least a portion of the first housing structure 510 and the second housing structure 520 may be formed of a metal material or a non-metal material having a rigidity of a size selected to support the display 100 .

In an embodiment, the sensor area 524 may be formed to have a predetermined area adjacent to one corner of the second housing structure 520 . However, the arrangement, shape, and size of the sensor area 524 are not limited to the illustrated example. For example, in other embodiments, the sensor area 524 may be provided at another corner of the second housing structure 520 or any area between the top and bottom corners. In an embodiment, components for performing various functions embedded in the electronic device 10 are electronically provided through the sensor area 524 or through one or more openings provided in the sensor area 524 . It may be exposed on the front side of the device 10 . In various embodiments, the components may include various types of sensors. The sensor may include, for example, at least one of a front camera, a receiver, and a proximity sensor.

The first rear cover 580 is disposed on one side of the folding shaft on the rear surface of the electronic device, and may have, for example, a substantially rectangular periphery, and is formed by the first housing structure 510 . Edges can be wrapped. Similarly, the second rear cover 590 may be disposed on the other side of the folding shaft on the rear surface of the electronic device, and an edge thereof may be surrounded by the second housing structure 520 .

In the illustrated embodiment, the first rear cover 580 and the second rear cover 590 may have a substantially symmetrical shape with respect to the folding axis (A axis). However, the first back cover 580 and the second back cover 590 do not necessarily have symmetrical shapes, and in another embodiment, the electronic device 10 includes the first back cover 580 and the second back cover 590 having various shapes. A second rear cover 590 may be included. In another embodiment, the first rear cover 580 may be integrally formed with the first housing structure 510 , and the second rear cover 590 may be integrally formed with the second housing structure 520 . there is.

In an embodiment, the first back cover 580 , the second back cover 590 , the first housing structure 510 , and the second housing structure 520 may include various components (eg: A printed circuit board (or a battery) may form a space in which it may be disposed. In an embodiment, one or more components may be disposed or visually exposed on the rear surface of the electronic device 10 . For example, at least a portion of the sub-display 190 may be visually exposed through the first rear area 582 of the first rear cover 580 . In another embodiment, one or more components or sensors may be visually exposed through the second back area 592 of the second back cover 590 . In various embodiments, the sensor may include a proximity sensor and/or a rear camera.

Referring to FIG. 2 , the hinge cover 530 is disposed between the first housing structure 510 and the second housing structure 520 to cover internal parts (eg, a hinge structure). can In an embodiment, the hinge cover 530 includes a first housing structure 510 and a second housing structure ( 520), or may be exposed to the outside.

For example, as shown in FIG. 1 , when the electronic device 10 is in an unfolded state, the hinge cover 530 may not be exposed because it is covered by the first housing structure 510 and the second housing structure 520 . . For example, as shown in FIG. 2 , when the electronic device 10 is in a folded state (eg, a fully folded state), the hinge cover 530 includes the first housing structure 510 and the second housing. It may be exposed to the outside between the structures 520 . For example, when the first housing structure 510 and the second housing structure 520 are in an intermediate state that is folded with a certain angle, the hinge cover 530 is the first housing structure A portion may be exposed to the outside between the 510 and the second housing structure 520 . However, in this case, the exposed area may be less than the fully folded state. In one embodiment, the hinge cover 530 may include a curved surface.

The display 100 may be disposed on a space formed by the foldable housing 500 . For example, the display 100 is seated in a recess formed by the foldable housing 500 and may constitute most of the front surface of the electronic device 10 .

Accordingly, the front surface of the electronic device 10 may include the display 100 and a partial area of the first housing structure 510 and a partial area of the second housing structure 520 adjacent to the display 100 . In addition, the rear surface of the electronic device 10 has a first rear cover 580 , a partial region of the first housing structure 510 adjacent to the first rear cover 580 , a second rear cover 590 , and a second rear cover. a portion of the second housing structure 520 adjacent to 590 .

The display 100 may refer to a display in which at least a partial area can be deformed into a flat surface or a curved surface. In an embodiment, the display 100 includes the folding area 103 , the first area 101 disposed on one side (the left side of the folding area 103 shown in FIG. 1 ) with respect to the folding area 103 , and the other side. It may include a second region 102 disposed on (the right side of the folding region 103 shown in FIG. 1 ).

The region division of the display 100 illustrated in FIG. 1 is exemplary, and the display 100 may be divided into a plurality (eg, four or more or two) regions according to a structure or function. For example, in the embodiment shown in FIG. 1 , the region of the display 100 may be divided by the folding region 103 extending parallel to the y-axis or the folding axis (A-axis), but in another embodiment, the display ( 100) may be divided into regions based on another folding region (eg, a folding region parallel to the x-axis) or another folding axis (eg, a folding axis parallel to the x-axis).

The first area 101 and the second area 102 may have an overall symmetrical shape with respect to the folding area 103 . However, unlike the first region 101 , the second region 102 may include a notch cut according to the presence of the sensor region 524 , but in other regions, the first region 102 . The region 101 may have a symmetrical shape. In other words, the first region 101 and the second region 102 may include a portion having a shape symmetric to each other and a portion having a shape asymmetric to each other.

Hereinafter, operations of the first housing structure 510 and the second housing structure 520 and the display 100 according to states of the electronic device 10 (eg, a flat state and a folded state) Describe each area of

In an embodiment, when the electronic device 10 is in a flat state (eg, FIG. 1 ), the first housing structure 510 and the second housing structure 520 form an angle of 180 degrees and are aligned in the same direction. It can be arranged to face. The surface of the first area 101 and the surface of the second area 102 of the display 100 may form 180 degrees with each other and may face the same direction (eg, the front direction of the electronic device). The folding area 103 may form the same plane as the first area 101 and the second area 102 .

In an embodiment, when the electronic device 10 is in a folded state (eg, FIG. 2 ), the first housing structure 510 and the second housing structure 520 may be disposed to face each other. The surface of the first area 101 and the surface of the second area 102 of the display 100 may face each other while forming a narrow angle (eg, between 0 and 10 degrees). At least a portion of the folding area 103 may be formed of a curved surface having a predetermined curvature.

In an embodiment, when the electronic device 10 is in a folded state (eg, FIG. 2 ), the first housing structure 510 and the second housing structure 520 are at a certain angle to each other. ) can be placed. The surface of the first region 101 and the surface of the second region 102 of the display 100 may form an angle greater than that in the folded state and smaller than that in the unfolded state. At least a portion of the folding region 103 may be formed of a curved surface having a predetermined curvature, and the curvature in this case may be smaller than that in a folded state.

3 is an exploded perspective view of an electronic device according to an exemplary embodiment;

Referring to FIG. 3 , in an embodiment, the electronic device 10 includes a display unit 20 , a bracket assembly 30 , a substrate unit 600 , a first housing structure 510 , and a second housing structure 520 . , a first back cover 580 and a second back cover 590 may be included. In this document, the display unit 20 may be referred to as a display module or a display assembly.

The display unit 20 may include a display 100 and one or more plates or layers 140 on which the display 100 is mounted. In an embodiment, the plate 140 may be disposed between the display 100 and the bracket assembly 30 . The display 100 may be disposed on at least a portion of one surface of the plate 140 (eg, an upper surface with reference to FIG. 3 ). The plate 140 may be formed in a shape corresponding to the display 100 . For example, a portion of the plate 140 may be formed in a shape corresponding to the notch 104 of the display 100 .

The bracket assembly 30 includes a first bracket 410, a second bracket 420, a hinge structure disposed between the first bracket 410 and the second bracket 420, and covers the hinge structure when viewed from the outside. It may include a hinge cover 530 and a wiring member 430 (eg, a flexible printed circuit board (FPC), a flexible printed circuit) crossing the first bracket 410 and the second bracket 420 .

In an embodiment, the bracket assembly 30 may be disposed between the plate 140 and the substrate unit 600 . For example, the first bracket 410 may be disposed between the first area 101 of the display 100 and the first substrate 610 . The second bracket 420 may be disposed between the second region 102 of the display 100 and the second substrate 620 .

In an embodiment, at least a portion of the wiring member 430 and the hinge structure 300 may be disposed inside the bracket assembly 30 . The wiring member 430 may be disposed in a direction (eg, an x-axis direction) crossing the first bracket 410 and the second bracket 420 . The wiring member 430 may be disposed in a direction (eg, the x-axis direction) perpendicular to the folding axis (eg, the y-axis or the folding axis A of FIG. 1 ) of the folding region 103 of the electronic device 10 . there is.

As mentioned above, the substrate unit 600 may include a first substrate 610 disposed on the first bracket 410 side and a second substrate 620 disposed on the second bracket 420 side. can The first substrate 610 and the second substrate 620 include a bracket assembly 30 , a first housing structure 510 , a second housing structure 520 , a first rear cover 580 , and a second rear cover. It may be disposed inside the space formed by 590 . Components for implementing various functions of the electronic device 10 may be mounted on the first substrate 610 and the second substrate 620 .

The first housing structure 510 and the second housing structure 520 may be assembled to be coupled to both sides of the bracket assembly 30 while the display unit 20 is coupled to the bracket assembly 30 . As will be described later, the first housing structure 510 and the second housing structure 520 may be coupled to the bracket assembly 30 by sliding from both sides of the bracket assembly 30 .

In one embodiment, the first housing structure 510 may include a first rotation support surface 512 , and the second housing structure 520 supports a second rotation support corresponding to the first rotation support surface 512 . face 522 . The first rotation support surface 512 and the second rotation support surface 522 may include curved surfaces corresponding to the curved surfaces included in the hinge cover 530 .

In an embodiment, the first rotational support surface 512 and the second rotational support surface 522 include the hinge cover 530 when the electronic device 10 is in an unfolded state (eg, the electronic device of FIG. 1 ). The hinge cover 530 may not be exposed to the rear side of the electronic device 10 or may be minimally exposed. Meanwhile, the first rotation support surface 512 and the second rotation support surface 522 are curved surfaces included in the hinge cover 530 when the electronic device 10 is in a folded state (eg, the electronic device of FIG. 2 ). The hinge cover 530 may be maximally exposed to the rear surface of the electronic device 10 by rotating along the .

4A is a diagram illustrating the display 100 of the electronic device 10 according to a comparative example. The display 100 may include a first area 101 , a second area 102 , and a display driving circuit 110 (display driver IC, DDI).

In an embodiment, the first area 101 and the second area 102 may display the image 120 . For example, the first area 101 and the second area 102 may display an execution screen of an application executed by the electronic device 10 as an image 120 . Pixels are disposed in the first area 101 and the second area 102 to display the image 120 . Scan lines 115a , 115b , 115c , 115d , and 115e for driving pixels may be disposed in the first region 101 and the second region 102 . The scan lines 115a , 115b , 115c , 115d , and 115e may be disposed to cross the first area 101 and the second area 102 in the first direction D1 . 4A to 4C and 5 illustrate only five scan lines 115a, 115b, 115c, 115d, and 115e due to limitations of the drawings. However, the present invention is not limited thereto, and the scan lines 115a, 115b, 115c, 115d, and 115e are the number of pixel columns formed by pixels disposed in the first area 101 and the second area 102 in the first direction D1. as many as can be placed.

In an embodiment, the display driving circuit 110 may be disposed so as not to overlap the first region 101 and the second region 102 . The display driving circuit 110 may scan the scan lines 115a, 115b, 115c, 115d, and 115e in the first direction D1. The display driving circuit 110 may supply scanning signals. The scanning signal may be supplied along the scan lines 115a , 115b , 115c , 115d , and 115e to the pixels disposed in the first region 101 and the second region 102 . The pixels receiving the scanning signal may scan the data voltage of the current frame.

According to an embodiment, the electronic device 10 may be the foldable electronic device 10 described with reference to FIGS. 1 to 3 . In the foldable electronic device 10 , both an edge parallel to the first direction D1 and an edge parallel to the second direction D2 perpendicular to the first direction D1 may have a length greater than or equal to a specified length. However, the present invention is not limited thereto, and the electronic device 10 may be a terminal having various types such as a tablet or a large-screen smart phone having a display area having a display area greater than or equal to a specified area. The various types of terminals may be terminals in which the scanning direction is determined in one direction (eg, the first direction D1 ) according to the position of the display driving circuit 110 as illustrated in FIG. 4A .

In an embodiment, on the display 100 of the electronic device 10 , a virtual boundary line B dividing the first area 101 and the second area 102 may be defined.

4B is a diagram illustrating a case in which the display 100 of the electronic device 10 is scrolled according to a comparative example.

In an embodiment, the user may move at least a portion of the images 121 and 122 displayed in the first area 101 and the second area 102 . The user may move at least a portion of the images 121 and 122 by performing a touch input on the first area 101 and the second area 102 using a finger, a touch pen, and/or a stylus. there is. For example, the user may scroll or flick the images 121 and 122 displayed in the first area 101 and the second area 102 in the illustrated second direction D2, which is the illustrated scroll direction. can be moved

In an embodiment, the scanning direction of the scan lines 115a, 115b, 115c, 115d, and 115e and the moving direction of the images 121 and 122 may be perpendicular to each other. The scan lines 115a, 115b, 115c, 115d, and 115e may be scanned in a first direction D1 and the images 121 and 122 may be scrolled in a second direction D2. For example, when the electronic device 10 is used in the state shown in FIG. 4B , the user may scroll the images 121 and 122 in the second direction D2 that is the vertical direction. As another example, when the electronic device 10 is rotated 90 degrees to the left or right in the state shown in FIG. 4B , the user may scroll the images 121 and 122 in the first direction D1, which is the left-right direction. .

In an embodiment, when a direction in which the scan lines 115a, 115b, 115c, 115d, and 115e are scanned and a direction in which the images 121 and 122 are moved are perpendicular to each other, according to the movement of the images 121 and 122 Distortion may occur. In each of the scan lines 115a, 115b, 115c, 115d, and 115e, an address for sequentially writing a data voltage to a pixel may be performed. In each of the scan lines 115a, 115b, 115c, 115d, and 115e, pixels may sequentially emit light according to a data voltage.

In an embodiment, the images 121 and 122 may include a first image 121 displayed on the first area 101 and a second image 122 displayed on the second area 102 . When addressing and light emission are sequentially performed on each of the scan lines 115a, 115b, 115c, 115d, and 115e, a time difference between the display time of the first image 121 and the display time of the second image 122 may occur. there is. In this case, a difference may occur in the frames of the image displayed on both sides of the virtual boundary line B that separates the first area 101 and the second area 102 . For example, scanning of each of the scan lines 115a , 115b , 115c , 115d , and 115e is performed in a first direction D1 that is a right direction to a left direction, and the image is displayed in a second direction D2 that is a top-down direction. Alternatively, when moving from bottom to top in the opposite direction to the second direction D2, the second image 122 that is the right part of the images 121 and 122 is updated first, and the second image 122 that is the left part of the images 121 and 122 is first updated. 1 The image 121 may be updated later. The first image 121 may be an image according to a data voltage supplied from a previous frame ((N-1)th Frame, where N is a natural number equal to or greater than 2). The second image 112 may be an image according to the data voltage supplied from the current frame (Nth Frame). When the images 121 and 122 are scrolled, the first image 121 according to the data voltage supplied from the previous frame ((N-1)th Frame) and the second image 121 according to the data voltage supplied from the current frame (Nth Frame) are scrolled. A step 123 may occur in the image 122 according to a time deviation.

4C is a diagram illustrating a case in which the display 100 of the electronic device 10 is scrolled according to a comparative example.

In an embodiment, when the length from the portion where the display driving circuit 110 is disposed to the opposite edge is greater than or equal to a specified length, the user may recognize the distortion of the image 124 . Step 123 according to time deviation between the first image 121 displaying the image of the previous frame ((N-1)th Frame) and the second image 122 displaying the image of the current frame (Nth Frame) A jelly scroll phenomenon in which the image 125 that is accumulated in the user's eyes and moves up and down is viewed by being tilted diagonally may occur.

In an embodiment, when the first direction D1 that is the scanning direction of the display driving circuit DDI and the second direction D2 that is the scrolling direction are different from each other, the first area 101 and the second area 102 are separated from each other. A jelly scroll phenomenon may occur due to a difference in scanning time. When the jelly scroll phenomenon occurs, the image 124 opposite from the portion where the display driving circuit 110 is disposed may vibrate like a wave. When the jelly scroll phenomenon occurs, the visibility of the image 124 may decrease. In the case of a portrait method such as a general smart phone in which the display driving circuit is disposed at a short edge, when the display driving circuit 110 is located at the bottom and scrolls in the left and right direction, jelly scroll for image scrolling issues may arise. In addition, as shown in FIG. 4C , when the display driving circuit 110 is used in the landscape direction in the foldable electronic device 10 located on the right side, the EM Driver emits light sequentially. Therefore, when the screen is scrolled in the vertical direction, a jelly scroll phenomenon may occur because the first direction D1 which is the scanning direction of the display driving circuit 110 and the second direction D2 which is the scroll direction are vertical. With the development of technology for driving the display 100 in the display driving circuit 110, it is possible to drive the display 100 by increasing the driving frequency up to 120 Hz, but it is not easy to reduce the jelly scroll phenomenon itself even if the driving frequency is increased. may not be

5 is a diagram illustrating a case in which the display 100 of the electronic device 10 is scrolled according to an exemplary embodiment.

In general, the display 100 may emit light while sequentially scanning the scan lines 115a, 115b, 115c, 115d, and 115e. For example, after scanning the first scan line 115a, light may be emitted by a light emission signal supplied from the light emission driver. Thereafter, after scanning the second scan line 115b, light may be emitted by the light emission signal. When the display 100 emits light while sequentially scanning the scan lines 115a, 115b, 115c, 115d, and 115e, a deviation in the emission time of each of the scan lines 115a, 115b, 115c, 115d, and 115e may occur. can

In an embodiment, the display 100 may simultaneously emit light by a light emitting signal supplied from the light emitting driver after scanning of the scan lines 115a, 115b, 115c, 115d, and 115e is completed. The supply of the scanning signal and the supply of the light emission signal of the display driving circuit 110 may be separately processed. For example, a scan line after scanning the first scan line 115a, the second scan line 115b, the third scan line 115c, the fourth scan line 115d, and the fifth scan line 115e The scan lines 115a, 115b, 115c, 115d, and 115e may drive global emission by simultaneously supplying an emission signal to the 115a, 115b, 115c, 115d, and 115e.

In an embodiment, when light is emitted from each of the scan lines 115a, 115b, 115c, 115d, and 115e at the same time, the display time of the image 125 in the first region 101 and the image in the second region 102 The time at which 125 is displayed may be substantially the same. Both the first area 101 and the second area 102 may display the image 125 according to the data voltage supplied in the current frame (Nth Frame). Since a step does not occur in the image 125 displayed between the first region 101 and the second region 102 , the jelly scroll phenomenon may be substantially reduced.

6 is a circuit diagram 600 illustrating pixels of a display (eg, the display 100 of FIGS. 1 to 5 ) according to an exemplary embodiment. The pixel may include a light emitting element EL, a storage capacitor Cst, and first to seventh transistors T1, T2, T3, T4, T5, T6, and T7.

In an embodiment, the light emitting device EL may emit light with brightness set according to the gate voltage of the first transistor T1 serving as the driving transistor. The light emitting device EL may be an organic light emitting diode (OLED).

In an embodiment, the voltage of the gate electrode G of the first transistor T1 may be constantly maintained by the storage capacitor Cst. The first transistor T1 may receive the data voltage DATA to the source electrode S under the control of the second transistor T1 . The first transistor T1 may output a driving current for driving the light emitting device EL to the drain electrode D according to the data voltage DATA and the voltage of the gate electrode G. The first transistor T1 may be a driving transistor of the pixel. For example, the first transistor T1 may be a P-type (positive type) MOSFET (Metal Oxide Semiconductor Field Effect Transistor).

In an embodiment, the second transistor T2 may supply a data voltage to the first transistor T1 based on the first scan signal Scan1 in an n-th frame (n is a natural number equal to or greater than 2) that is a current frame. . The second transistor T2 may set an address period for writing the data voltage DATA to the first transistor T1 .

In an embodiment, the third transistor T3 may maintain the gate voltage of the first transistor T1 for the n-th frame based on the second scan signal Scan2 in the n-th frame.

In an embodiment, the fourth transistor T4 may generate a data voltage DATA stored in the storage capacitor Cst in the nth frame based on the second scan signal Scan2 in the (n−1)th frame, which is the previous frame. may be initialized with the initialization voltage Vinit.

In an embodiment, a hybrid oxide poly-Si (HOP) technology may be applied to the display 100 . The third transistor T3 and the fourth transistor T4 may be oxide TFTs 610 and 620 . The leakage current of the oxide thin film transistors 610 and 620 may be smaller than the leakage current of the polymer silicon thin film transistor (Poly-Si TFT). The third transistor T3 and the fourth transistor T4 are changed to the oxide thin film transistors 610 and 620 to separate and drive the third transistor T3 and the fourth transistor T4 using a separate scan signal. can

In an embodiment, the fifth transistor T5 may supply the high potential reference voltage ELVDD to the source electrode S of the first transistor T1 based on the light emission signal EM in the nth frame. The sixth transistor T6 may supply a driving current to the light emitting device EL based on the light emission signal EM in the nth frame. The fifth transistor T5 and the sixth transistor T6 may set a holding period for maintaining the data voltage DATA written in the address period. In the holding period, the pixel maintains the data voltage DATA value in the previous frame without scanning and operates only by the emission signal EM, so the holding period may be defined as a self-scan period.

In an embodiment, the seventh transistor T7 applies the voltage applied to the gate electrode of the first transistor T1 as the driving transistor based on the first scan signal Scan1 in the (n+1)th frame, which is the next frame. It can be initialized with an initialization voltage (Vinit).

In an embodiment, each of the plurality of pixels receives a data voltage DATA corresponding to the brightness and color to be displayed in the current frame from the display driving circuit (eg, the DDI 110 of FIG. 5 ). can be supplied. The first transistor T1, which is a driving transistor of the pixel, is driven by the data voltage DATA supplied from the n-th frame, which is the current frame, so that the light emitting element EL such as an organic light emitting diode can emit light with a specified brightness. Specifically, the data voltage DATA is supplied to the source electrode S of the first transistor T1 , and the source electrode S of the first transistor T1 and the gate electrode G of the first transistor T1 are applied. The brightness of the light emitting element EL driven by the first transistor T1 may be set by a voltage difference value of .

7 is a first DA/GI of a display (eg, the display 100 of FIGS. 1 to 3 and 5 ) of an electronic device (eg, the electronic device 10 of FIGS. 1 to 3 and 5 ) according to an embodiment; It is a diagram 700 illustrating a frame 710 and a second DA/GI frame 720 . The DA/GI frame may be an abbreviation defining a data address (DA) and a global illumination (GI).

In an embodiment, the processor (eg, the processor 1220 of FIG. 12 ) may set one frame driven by the display 100 . One frame may include a first DA/GI frame 710 and a second DA/GI frame 720 . For example, the first DA/GI frame 710 belongs to the current frame (eg, the n-th frame of FIG. 6 ), and the second DA/GI frame 720 is the next frame (eg, the n-th frame of FIG. 6 ). n+1) frame).

In an embodiment, the processor 1220 may determine whether an image displayed by the display 100 displays an execution screen of an application that operates at a first frequency or higher that is a specified driving frequency. The processor 1220 may determine the driving form of the image displayed by the display 100 by analyzing the type of the currently operated application. For example, the processor 1220 may determine that the image displayed by the display 100 is a game application in which the amount of change over time is greater than or equal to a specified range.

In an embodiment, the display driving circuit (eg, the DDI 110 of FIG. 5 ) transmits a data voltage (eg, the data voltage DATA of FIG. 6 ) to the driving transistors (eg, the first embodiment of FIG. 6 ) of the plurality of pixels. The first DA/GI frame 710 and the second DA/GI frame 720 provided to one transistor T1) may be set. When the display 100 displays an execution screen of an application operating at a first frequency or higher, the display driving circuit 110 writes a new data voltage DATA every frame, the first DA/GI frame 710 and the second 2 DA/GI frames 720 may be set.

In an embodiment, the display driving circuit 110 divides the first DA/GI frame 710 into a first DA section 711 and a first DH/GI section 712 , and a second DA/GI frame ( 720 ) may be divided into a second DA section 721 and a second DH/GI section 722 . The first DA period 711 and the second DA period 721 include scanning signals (eg, scan lines 115a, 115b, 115c, 115d, and 115e of FIG. A data voltage DATA is applied to pixels connected to the plurality of scan lines 115a, 115b, 115c, 115d, and 115e while sequentially changing n1, n2, n3, n4, ... n1803, n1804 to a high state. It may be a section for writing . In the first DH/GI section 712 and the second DH/GI section 722 , the light-emitting signal (eg, the light emission of FIG. 6 ) is simultaneously transmitted to the pixels disposed in the display 100 while the written data voltage DATA is maintained. The signal EM) may be supplied to cause the pixels to emit light.

In an embodiment, the display driving circuit 110 may include a first DH/GI period 712 and a second DH/ In the GI section 722 , a global illumination (GI) driving for simultaneously supplying an emission signal EM to pixels disposed on the display 100 may be performed. The display driving circuit 110 may be driven at a driving frequency of about 120 Hz, which is a higher driving frequency than a general driving frequency, in order to perform global light emission driving in which the EM signal is simultaneously supplied to the pixels. When the display driving circuit 110 applies global light emission driving, the jelly scroll phenomenon may be improved.

In an embodiment, in the first DH/GI section 712 and the second DH/GI section 722 to which the display driving circuit 110 supplies the EM signal, the display driving circuit 110 generates the data voltage DATA. The addressing may be correlated with the first DA period 711 and the second DA period 721 . For example, in the first DH/GI section 712 and the second DH/GI section 722 to which the display driving circuit 110 supplies the EM signal, the display driving circuit 110 addresses the data voltage DATA. It may be a section excluding the first DA section 711 and the second DA section 721 .

In an embodiment, lengths of the first GI section 712 and the second GI section 722 to which the display driving circuit 110 supplies the EM signal may be limited. The luminance of the display 100 perceived by a person may coincide with the sum of the total amount of light emitted by the display 100 during one frame. When the lengths of the first GI section 712 and the second GI section 722 for supplying the EM signal are limited, the luminance of the display 100 can be maintained only when the luminance of the base is increased. When the base luminance increases, the driving voltage may increase and power consumption may increase. When the power consumption is maintained, the luminance limitation of the display 100 may occur.

In an embodiment, the display driving circuit 110 displays the first DA/GI when the image displayed by the display 100 in the processor 1220 displays an execution screen of an application operating at a first frequency or higher, which is a specified driving frequency. The EM signal may be simultaneously supplied to pixels in the first DH/GI period 712 and the second DH/GI period 722 , which are at least a partial period of the frame 710 and the second DA/GI frame 720 . The display driving circuit 110 may perform global light emission driving in game applications requiring rapid latency reduction or when using a Head Mount Display (HMD).

8 is a DA/GI frame of a display (eg, the display 100 of FIGS. 1 to 3 and 5) of an electronic device (eg, the electronic device 10 of FIGS. 1 to 3 and 5) according to an embodiment. 810) and a diagram 800 illustrating a DH/GI frame 820. The DA/GI frame 810 may be a data address and global driving frame. The DH/GI frame may be a data holding (DH) and global driving frame that maintains a written data voltage.

In an embodiment, the processor (eg, the processor 1220 of FIG. 12 ) may set one frame driven by the display 100 . One frame may be a DA/GI frame 810 and/or a DH/GI frame 820 . For example, the DA/GI frame 810 belongs to the current frame (eg, the n-th frame of FIG. 6 ), and the DH/GI frame 820 is the next frame (eg, the (n+1)-th frame of FIG. 6 ). frame) may be included.

In an embodiment, the processor 1220 may determine whether an image displayed by the display 100 displays an execution screen of an application operating at a first frequency or less, which is a specified driving frequency. The processor 1220 may determine the driving form of the image displayed by the display 100 by analyzing the type of the currently operated application. For example, the processor 1220 may determine that the image displayed by the display 100 is a general UI or web browser environment in which the amount of change with time is less than or equal to a specified range.

In an embodiment, the display driving circuit 110 provides a data voltage (eg, the data voltage DATA of FIG. 6 ) to a driving transistor (eg, the first transistor T1 of FIG. 6 ) of each of the plurality of pixels. The DA/GI frame 810 and the DH/GI frame 820 maintaining the data voltage DATA value written in the DA/GI frame 810 may be set. The DA/GI frame 810 supplies a data voltage DATA or a pixel voltage corresponding to an image to be actually displayed in the current frame (n-th frame) to the gate node of the driving transistor T1 or It may be a section for writing. The DH/GI frame 820 does not supply the data voltage DATA to the gate node of the driving transistor T1 , and the data voltage of the current frame (n-th frame) that is the previous frame based on the DH/GI frame 820 . (DATA) value may be maintained. In the DA/GI frame 820 , the scan driver of the display driving circuit 110 may not operate, and the EM driver may operate normally.

In an embodiment, the display driving circuit 110 divides the DA/GI frame 810 into a DA section 811 and a first GI section 812 , and divides the DH/GI frame 820 into a DH section 821 . and a second GI section 822 . The DA section 811 includes scanning signals n1, n2, n3, n4, ... n1803 supplied to each of the plurality of scan lines (eg, the scan lines 115a, 115b, 115c, 115d, 115e of FIG. 5 ). , n1804 may be sequentially changed to a high state while writing the data voltage DATA to pixels connected to the plurality of scan lines 115a, 115b, 115c, 115d, and 115e. The first GI section 812 and the GI section 822 may be sections in which a light emitting signal (eg, the light emitting signal EM of FIG. 6 ) is simultaneously supplied to the pixels disposed on the display 100 to cause the pixels to emit light. .

In an embodiment, the display driving circuit 110 transmits the light emitting signal EM to a plurality of lines (eg, lines supplying the light emitting signal EM of FIG. 6 ) connected to a plurality of pixels in the DH section 821 . ) can be set to control the supply time at the same time. The display driving circuit 110 may simultaneously supply a light emitting signal (eg, the light emitting signal EM of FIG. 6 ) to pixels disposed on the display 100 in at least a partial section of the DH section 821 to cause the pixels to emit light. there is. For example, the display driving circuit 110 may simultaneously supply the light emitting signal EM to the pixels disposed in the display 100 in a partial section of the DH section 821 before the second GI section 822 starts. can As another example, the display driving circuit 110 may simultaneously supply the light emitting signal EM to the pixels disposed in the display 100 in the entire period except for the time when the synchronization signal TE is in a high state during the DH period 821 . there is.

In an embodiment, the display 100 to which a hybrid oxide poly-silicon structure is applied has a data voltage DATA separately on each of a plurality of data lines in the DH/GI frame 820 . is not addressed, the voltage value of the gate node of the driving transistor T1 may be maintained. The display driving circuit 110 may have a DH/GI frame 820 that maintains the voltage value of the gate node of the driving transistor T1 without addressing the data voltage DATA. For example, the display driving circuit 110 may be set to alternately repeat the DA/GI frame 810 and the DH/GI frame 820 in a general UI or web browser environment that does not require fast latency compensation. there is. The display driving circuit 110 may control the width of a section in which the emission signal EM is simultaneously supplied to a plurality of pixels in the DH/GI frame 820 .

In an embodiment, the display driving circuit 110 may control the luminance of the base of the display 100 based on a width of a section in which the light emitting signal EM is simultaneously supplied to a plurality of pixels. When the width of the section in which the emission signal EM is simultaneously supplied to the plurality of pixels is increased, the total time during which the image displayed by the display 100 is exposed to the user's view for one frame may increase. When the exposure time of the image displayed by the display 100 increases, the user may recognize that the same luminance is displayed even if the base luminance of the display 100 is reduced. When the luminance of the base of the display 100 is reduced, a gap, which is a difference value between driving voltages (eg, ELVDD and ELVSS of FIG. 6 ), may decrease, so that power consumption may be reduced.

In an embodiment, when the DA/GI frame 810 and the DH/GI frame 820 are alternately repeated, the driving frequency actually perceived by the user as compared to the driving frequency set by the processor 1120 may be reduced by half. can For example, when the processor 1220 drives at a driving frequency of 120 Hz and supplies 120 frames for 1 second, the DA/GI frame 810 and the DH/GI frame 820 are alternately repeated 60 times, so that the user The driving frequency recognized by the may be 60 Hz. However, since the light emitting signal EM is simultaneously supplied to the plurality of pixels in the DH/GI frame 820 , the jelly scroll phenomenon may not occur.

9 is a DA frame 910 of a display (eg, the display 100 of FIGS. 1 to 3 and 5 ) of an electronic device (eg, the electronic device 10 of FIGS. 1 to 3 and 5 ) according to an embodiment. and a diagram 900 illustrating a DH/GI frame 920 . The DH/GI frame may be a data holding and global driving frame.

In an embodiment, the display driving circuit (eg, the display driving circuit 110 of FIG. 5 ) applies a data voltage (eg, the first transistor T1 of FIG. 6 ) to the driving transistor (eg, the first transistor T1 of FIG. 6 ) in the entire DA frame 910 . The data voltage DATA of 6. The display driving circuit 110 may use a plurality of scan lines (eg, the scan lines 115a, 115b, 115c, and 115d of FIG. 5 ) throughout the address period 910 . , 115e)) while sequentially changing the scanning signals n1, n2, n3, n4, ... n1803, n1804 to a high state, and The data voltage DATA may be written to the connected pixels.

In an embodiment, the display driving circuit 110 transmits a light emission signal (eg, the emission signal EM of FIG. 6 ) in the DH/GI frame 920 to a plurality of lines (eg, FIG. 6 ) connected to a plurality of pixels. may be set to be simultaneously supplied to the line supplying the light emission signal EM of The display driving circuit 110 may be configured to simultaneously supply the emission signal EM to the plurality of pixels disposed in the display 100 throughout the DH/GI frame 920 .

In an embodiment, when writing the data voltage DATA in the address period 910 , as the driving frequency of the processor 120 increases, the writing time of the data voltage DATA may decrease. The display driving circuit 110 may separate the emission period from the DA frame 910 so that the emission signal EM is not supplied in the address period 910 . The display driving circuit 110 may secure the maximum amount of time for writing the data voltage DATA in the DA frame 910 . The display driving circuit 110 may supply the entire emission signal EM in the DH/GI frame 920 to secure as much time as possible for the pixels disposed in the display 100 to simultaneously emit light.

10 is a DA frame 1010 of a display (eg, the display 100 of FIGS. 1 to 3 and 5 ) of an electronic device (eg, the electronic device 10 of FIGS. 1 to 3 and 5 ) according to an embodiment. , a first DH frame 1020 , a second DH frame 1030 , and a third DH frame 1040 are diagrams 1000 . The DA frame may be a data address frame. The DH frame may be a data holding frame.

In an embodiment, the processor (eg, the processor 1220 of FIG. 12 ) may check whether the display 100 displays a screen that has stopped while a specified time has elapsed. The processor 1220 may determine whether the image displayed by the display 100 has changed. The processor 1220 has substantially the same data voltage (eg, the data voltage DATA of FIG. 6 ) supplied from the display driving circuit (eg, the display driving circuit 110 of FIG. 5 ) to the display 100 for a specified time. You can check whether it is maintained or not.

In an embodiment, the display driving circuit 110 may set the DH frames 1020 , 1030 , and 1040 to be repeated a plurality of times after the DA frame 1010 . The display driving circuit 110 writes the data voltage DATA in one frame when displaying a still screen for a specified time and then writes a plurality of DH frames 1020, 1030, and 1040 while a plurality of frames elapse. The DH frames 1020 , 1030 , and 1040 may be set to be repeated. For example, in the display driving circuit 110 , after one DA frame 1010 , the first DH frame 1020 , the second DH frame 1030 , and the third DH frame 1040 are repeated for three consecutive frames. The DA frame 1010 and the DH frames 1020 , 1030 , and 1040 may be set as much as possible.

In an embodiment, the display driving circuit 110 transmits a light emitting signal (eg, the emission signal EM of FIG. 6 ) in at least a portion of the DA frame 1010 to a plurality of lines (eg: It may be set to simultaneously supply the lines supplying the light emitting signal EM of FIG. 6 . The display driving circuit 110 includes scanning signals n1, n2, n3, n4, ... supplied to each of the plurality of scan lines (eg, the scan lines 115a, 115b, 115c, 115d, 115e of FIG. 5 ). The data voltage DATA is applied to the pixels connected to the plurality of scan lines 115a, 115b, 115c, 115d, and 115e while sequentially changing n1803 and n1804 to a high state. In the GI section 1012 , the emission signal EM may be simultaneously supplied to a plurality of pixels.

In an embodiment, the display driving circuit 110 includes a second GI section 1022 that is at least some sections of the first DH frame 1020 , the second DH frame 1030 , and the third DH frame 1040 , In the third GI section 1032 and the fourth GI section 1042 , the light emitting signal EM may be set to be simultaneously supplied to a plurality of lines connected to a plurality of pixels. The display driving circuit 110 may divide the first DH frame 1020 into a first DH period 1021 and a second GI period 1022 . The display driving circuit 110 may divide the second DH frame 1030 into a second DH section 1031 and a third GI section 1032 . The display driving circuit 110 may divide the third DH frame 1040 into a third DH section 1041 and a fourth GI section 1042 . The display driving circuit 110 may stand by without supplying the light emitting signal EM in the first DH section 1021 , the second DH section 1031 , and the third DH section 1041 . The display driving circuit 110 may simultaneously supply the emission signal EM to the plurality of pixels in the second GI section 1022 , the third GI section 1032 , and the fourth GI section 1042 .

11 is a DA frame 1110 of a display (eg, the display 100 of FIGS. 1 to 3 and 5 ) of an electronic device (eg, the electronic device 10 of FIGS. 1 to 3 and 5 ) according to an embodiment. , a view 1100 showing a first DH frame 1120 , a second DH frame 1130 , a third DH frame 1140 , and a fourth DH frame 1150 .

In an embodiment, the processor (eg, the processor 1220 of FIG. 12 ) may check whether the display 100 displays a screen that has stopped while a specified time has elapsed.

In an embodiment, the display driving circuit (eg, the display driving circuit 110 of FIG. 5 ) may set the DH frames 1120 , 1130 , 1140 , and 1150 to be repeated a plurality of times after the DA frame 1110 . For example, after one DA frame 1110 , the display driving circuit 110 generates a first DH frame 1120 , a second DH frame 1130 , a third DH frame 1140 , and a fourth DH frame 1150 . ) may be set so that the DA frame 1110 and the DH frames 1120 , 1130 , 1140 , and 1150 are repeated for 4 consecutive frames.

In an embodiment, the display driving circuit 110 transmits a light emitting signal (eg, the light emitting signal EM of FIG. 6 ) to a plurality of pixels in the first GI section 1112 that is at least a partial section of the DA frame 1110 . It may be set to simultaneously supply a plurality of connected lines (eg, lines supplying the light emitting signal EM of FIG. 6 ). The display driving circuit 110 includes scanning signals n1, n2, n3, n4, ... supplied to each of the plurality of scan lines (eg, the scan lines 115a, 115b, 115c, 115d, 115e of FIG. 5 ). The DA section 1111, which is a section in which the data voltage DATA is written to the pixels connected to the plurality of scan lines 115a, 115b, 115c, 115d, and 115e, is ended while sequentially changing n1803 and n1804 to a high state. The emission signal EM may be simultaneously supplied to the plurality of pixels in the first GI period 1112 , which is a subsequent period.

In an embodiment, the display driving circuit 110 includes a first DH frame 1120 , a second DH frame 1130 , a third DH frame 1140 , and a fourth DH frame 1150 that is at least a partial section. In the second GI section 1122 , the third GI section 1132 , the fourth GI section 1142 , and the fifth GI section 1152 , the emission signal (eg, the emission signal EM of FIG. 6 ) is transmitted to a plurality of pixels. It may be set to be simultaneously supplied to a plurality of lines connected to , (eg, lines supplying the light emitting signal EM of FIG. 6 ). For example, in the display driving circuit 110 , the synchronization signal TE among the first DH frame 1120 , the second DH frame 1130 , the third DH frame 1140 , and the fourth DH frame 1150 is A second GI section 1122, a third GI section 1132, a fourth GI section 1142, and a fifth GI section 1152, which are sections other than the synchronization sections 1121, 1131, 1141, and 1151 in the high state. may simultaneously supply the emission signal EM to the plurality of pixels.

In an embodiment, the display driving circuit 110 may display a still image on the display 100 using only the light emitting signal EM. The display driving circuit 110 uses only the light emitting signal EM in the first DH frame 1120 , the second DH frame 1130 , the third DH frame 1140 , and the fourth DH frame 1150 to generate a still image. may be processed to be displayed on the display 100 . In the case of a still image, unlike a movement or touch event, since the data voltage DATA is kept constant while a specified time elapses, the scan driver of the display driving circuit 110 does not need to operate. The display driving circuit 110 sets the DH frames 1120 , 1130 , 1140 , and 1150 to be repeated a plurality of times after the DA frame 1110 to increase the driving frequency recognized by the user as compared with the driving frequency set by the processor 1220 . can be reduced The display driving circuit 110 may reduce the driving frequency recognized by the user to reduce power consumption.

12 is a block diagram of an electronic device 1201 in a network environment 1200, according to various embodiments. Referring to FIG. 12 , in a network environment 1200 , the electronic device 1201 communicates with the electronic device 1202 through a first network 1298 (eg, a short-range wireless communication network) or a second network 1299 . It may communicate with the electronic device 1204 or the server 1208 through (eg, a long-distance wireless communication network). According to an embodiment, the electronic device 1201 may communicate with the electronic device 1204 through the server 1208 . According to an embodiment, the electronic device 1201 includes a processor 1220 , a memory 1230 , an input device 1250 , a sound output device 1255 , a display device 1260 , an audio module 1270 , and a sensor module ( 1276 , interface 1277 , haptic module 1279 , camera module 1280 , power management module 1288 , battery 1289 , communication module 1290 , subscriber identification module 1296 , or antenna module 1297 . ) may be included. In some embodiments, at least one of these components (eg, the display device 1260 or the camera module 1280 ) may be omitted or one or more other components may be added to the electronic device 1201 . In some embodiments, some of these components may be implemented as one integrated circuit. For example, the sensor module 1276 (eg, a fingerprint sensor, an iris sensor, or an illuminance sensor) may be implemented while being embedded in the display device 1260 (eg, a display).

The processor 1220, for example, executes software (eg, a program 1240) to execute at least one other component (eg, a hardware or software component) of the electronic device 1201 connected to the processor 1220. It can control and perform various data processing or operations. According to one embodiment, as at least part of data processing or computation, the processor 1220 may store commands or data received from other components (eg, the sensor module 1276 or the communication module 1290) into the volatile memory 1232 . may be loaded into , process commands or data stored in volatile memory 1232 , and store the resulting data in non-volatile memory 1234 . According to an embodiment, the processor 1220 includes a main processor 1221 (eg, a central processing unit or an application processor), and a co-processor 1223 (eg, a graphics processing unit, an image signal processor) that can be operated independently or in conjunction with the main processor 1221 (eg, a graphics processing unit or an image signal processor). , a sensor hub processor, or a communication processor). Additionally or alternatively, the auxiliary processor 1223 may be configured to use less power than the main processor 1221 or to be specialized for a designated function. The coprocessor 1223 may be implemented separately from or as part of the main processor 1221 .

The coprocessor 1223 may be, for example, on behalf of the main processor 1221 while the main processor 1221 is in an inactive (eg, sleep) state, or when the main processor 1221 is active (eg, executing an application). ), together with the main processor 1221, at least one of the components of the electronic device 1201 (eg, the display device 1260, the sensor module 1276, or the communication module 1290) It is possible to control at least some of the related functions or states. According to one embodiment, coprocessor 1223 (eg, image signal processor or communication processor) may be implemented as part of another functionally related component (eg, camera module 1280 or communication module 1290). there is.

The memory 1230 may store various data used by at least one component of the electronic device 1201 (eg, the processor 1220 or the sensor module 1276). The data may include, for example, input data or output data for software (eg, the program 1240 ) and instructions related thereto. The memory 1230 may include a volatile memory 1232 or a non-volatile memory 1234 .

The program 1240 may be stored as software in the memory 1230 , and may include, for example, an operating system 1242 , middleware 1244 , or an application 1246 .

The input device 1250 may receive a command or data to be used in a component (eg, the processor 1220 ) of the electronic device 1201 from the outside (eg, a user) of the electronic device 1201 . The input device 1250 may include, for example, a microphone, a mouse, a keyboard, or a digital pen (eg, a stylus pen).

The sound output device 1255 may output a sound signal to the outside of the electronic device 1201 . The sound output device 1255 may include, for example, a speaker or a receiver. The speaker can be used for general purposes such as multimedia playback or recording playback, and the receiver can be used to receive incoming calls. According to one embodiment, the receiver may be implemented separately from or as part of the speaker.

The display device 1260 may visually provide information to the outside (eg, a user) of the electronic device 1201 . The display device 1260 may include, for example, a display, a hologram device, or a projector and a control circuit for controlling the corresponding device. According to an embodiment, the display device 1260 may include a touch circuitry configured to sense a touch or a sensor circuit (eg, a pressure sensor) configured to measure the intensity of a force generated by the touch. there is.

The audio module 1270 may convert a sound into an electric signal or, conversely, convert an electric signal into a sound. According to an embodiment, the audio module 1270 acquires a sound through the input device 1250 or an external electronic device (eg, a sound output device 1255 ) directly or wirelessly connected to the electronic device 1201 . A sound may be output through the electronic device 1202 (eg, a speaker or headphones).

The sensor module 1276 detects an operating state (eg, power or temperature) of the electronic device 1201 or an external environmental state (eg, a user state), and generates an electrical signal or data value corresponding to the sensed state. can do. According to one embodiment, the sensor module 1276 may include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, It may include a temperature sensor, a humidity sensor, or an illuminance sensor.

The interface 1277 may support one or more specified protocols that may be used for the electronic device 1201 to directly or wirelessly connect with an external electronic device (eg, the electronic device 1202 ). According to an embodiment, the interface 1277 may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

The connection terminal 1278 may include a connector through which the electronic device 1201 can be physically connected to an external electronic device (eg, the electronic device 1202 ). According to an embodiment, the connection terminal 1278 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (eg, a headphone connector).

The haptic module 1279 may convert an electrical signal into a mechanical stimulus (eg, vibration or movement) or an electrical stimulus that the user can perceive through tactile or kinesthetic sense. According to an embodiment, the haptic module 1279 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

The camera module 1280 may capture still images and moving images. According to one embodiment, the camera module 1280 may include one or more lenses, image sensors, image signal processors, or flashes.

The power management module 1288 may manage power supplied to the electronic device 1201 . According to an embodiment, the power management module 1288 may be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

The battery 1289 may supply power to at least one component of the electronic device 1201 . According to one embodiment, battery 1289 may include, for example, a non-rechargeable primary cell, a rechargeable secondary cell, or a fuel cell.

The communication module 1290 is a direct (eg, wired) communication channel or a wireless communication channel between the electronic device 1201 and an external electronic device (eg, the electronic device 1202, the electronic device 1204, or the server 1208). It can support establishment and communication through the established communication channel. The communication module 1290 may include one or more communication processors that operate independently of the processor 1220 (eg, an application processor) and support direct (eg, wired) communication or wireless communication. According to one embodiment, the communication module 1290 may include a wireless communication module 1292 (eg, a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 1294 (eg, : A LAN (local area network) communication module, or a power line communication module) may be included. A corresponding communication module among these communication modules is a first network 1298 (eg, a short-range communication network such as Bluetooth, WiFi direct, or IrDA (infrared data association)) or a second network 1299 (eg, a cellular network, the Internet, Alternatively, it may communicate with the external electronic device 1204 through a computer network (eg, a telecommunication network such as a LAN or WAN). These various types of communication modules may be integrated into one component (eg, a single chip) or may be implemented as a plurality of components (eg, multiple chips) separate from each other. The wireless communication module 1292 uses subscriber information (eg, International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 1296 within a communication network, such as the first network 1298 or the second network 1299 . The electronic device 1201 may be identified and authenticated.

The antenna module 1297 may transmit or receive a signal or power to the outside (eg, an external electronic device). According to an embodiment, the antenna module 1297 may include one antenna including a conductor formed on a substrate (eg, a PCB) or a radiator formed of a conductive pattern. According to an embodiment, the antenna module 1297 may include a plurality of antennas. In this case, at least one antenna suitable for a communication scheme used in a communication network such as the first network 1298 or the second network 1299 is connected from the plurality of antennas by, for example, the communication module 1290 . can be selected. A signal or power may be transmitted or received between the communication module 1290 and an external electronic device through the selected at least one antenna. According to some embodiments, other components (eg, RFIC) other than the radiator may be additionally formed as a part of the antenna module 1297 .

At least some of the components are connected to each other through a communication method between peripheral devices (eg, a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)) and a signal ( e.g. commands or data) can be exchanged with each other.

According to an embodiment, the command or data may be transmitted or received between the electronic device 1201 and the external electronic device 1204 through the server 1208 connected to the second network 1299 . Each of the external electronic devices 1202 and 1204 may be the same as or different from the electronic device 1201 . According to an embodiment, all or a part of operations executed by the electronic device 1201 may be executed by one or more of the external electronic devices 1202 , 1204 , or 1208 . For example, when the electronic device 1201 needs to perform a function or service automatically or in response to a request from a user or other device, the electronic device 1201 may perform the function or service by itself instead of executing the function or service itself. Alternatively or additionally, one or more external electronic devices may be requested to perform at least a part of the function or the service. The one or more external electronic devices that have received the request may execute at least a part of the requested function or service, or an additional function or service related to the request, and transmit a result of the execution to the electronic device 1201 . The electronic device 1201 may process the result as it is or additionally and provide it as at least a part of a response to the request. For this purpose, for example, cloud computing, distributed computing, or client-server computing technology may be used.

13 is a block diagram 1300 of a display device 1260 according to various embodiments of the present disclosure. Referring to FIG. 13 , a display device 1260 may include a display 1310 and a display driver IC (DDI) 1330 for controlling the display 1310 . The DDI 1330 may include an interface module 1331 , a memory 1333 (eg, a buffer memory), an image processing module 1335 , or a mapping module 1337 . The DDI 1330 receives, for example, image data or image information including an image control signal corresponding to a command for controlling the image data from other components of the electronic device 1201 through the interface module 1331 . can do. For example, according to an embodiment, the image information is provided by the processor 1220 (eg, the main processor 1221 (eg, an application processor) or the auxiliary processor 1223 ( For example: graphic processing device) The DDI 1330 may communicate with the touch circuit 1350 or the sensor module 1276 through the interface module 1331. In addition, the DDI 1330 may communicate with the touch circuit 1350 or the sensor module 1276. At least a portion of the received image information may be stored in the memory 1333, for example, in units of frames, for example, the image processing module 1335 may store at least a portion of the image data, Pre-processing or post-processing (eg, resolution, brightness, or size adjustment) may be performed based at least on the characteristics of the display 1310. The mapping module 1337 performs pre-processing or post-processing through the image processing module 1235. A voltage value or a current value corresponding to the image data may be generated. According to an embodiment, the generation of the voltage value or the current value may include, for example, a property of pixels of the display 1310 (eg, an arrangement of pixels) RGB stripe or pentile structure), or the size of each sub-pixel) At least some pixels of the display 1310 are, for example, based at least in part on the voltage value or the current value. By being driven, visual information (eg, text, image, or icon) corresponding to the image data may be displayed through the display 1310 .

According to an embodiment, the display device 1260 may further include a touch circuit 1350 . The touch circuit 1350 may include a touch sensor 1351 and a touch sensor IC 1353 for controlling the touch sensor 1351 . The touch sensor IC 1353 may control the touch sensor 1351 to sense, for example, a touch input or a hovering input for a specific location of the display 1310 . For example, the touch sensor IC 1353 may detect a touch input or a hovering input by measuring a change in a signal (eg, voltage, light amount, resistance, or charge amount) for a specific position of the display 1310 . The touch sensor IC 1353 may provide information (eg, location, area, pressure, or time) regarding the sensed touch input or hovering input to the processor 1220 . According to an embodiment, at least a part of the touch circuit 1350 (eg, the touch sensor IC 1353 ) is disposed as a part of the display driver IC 1330 , the display 1310 , or outside the display device 1260 . may be included as part of another component (eg, the coprocessor 1223).

According to an embodiment, the display device 1260 may further include at least one sensor (eg, a fingerprint sensor, an iris sensor, a pressure sensor, or an illuminance sensor) of the sensor module 1276 or a control circuit therefor. In this case, the at least one sensor or a control circuit therefor may be embedded in a part of the display device 1260 (eg, the display 1310 or the DDI 1330 ) or a part of the touch circuit 1350 . For example, when the sensor module 1276 embedded in the display device 1260 includes a biosensor (eg, a fingerprint sensor), the biosensor provides biometric information related to a touch input through a partial area of the display 1310 . (eg, fingerprint image) can be acquired. As another example, if the sensor module 1276 embedded in the display device 1260 includes a pressure sensor, the pressure sensor may acquire pressure information related to a touch input through a part or the entire area of the display 1310 . can According to an embodiment, the touch sensor 1351 or the sensor module 1276 may be disposed between pixels of the pixel layer of the display 1310 , or above or below the pixel layer.

The electronic device according to various embodiments disclosed in this document may have various types of devices. The electronic device may include, for example, a portable communication device (eg, a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance device. The electronic device according to the embodiment of the present document is not limited to the above-described devices.

It should be understood that the various embodiments of this document and the terms used therein are not intended to limit the technical features described in this document to specific embodiments, and include various modifications, equivalents, or substitutions of the embodiments. In connection with the description of the drawings, like reference numerals may be used for similar or related components. The singular form of the noun corresponding to the item may include one or more of the item, unless the relevant context clearly dictates otherwise. As used herein, “A or B”, “at least one of A and B”, “at least one of A or B”, “A, B or C”, “at least one of A, B and C” and “A, Each of the phrases such as "at least one of B, or C" may include any one of, or all possible combinations of, items listed together in the corresponding one of the phrases. Terms such as “first”, “second”, or “first” or “second” may simply be used to distinguish the component from other components in question, and may refer to components in other aspects (e.g., importance or order) is not limited. that one (e.g. first) component is "coupled" or "connected" to another (e.g. second) component with or without the terms "functionally" or "communicatively" When referenced, it means that one component can be connected to the other component directly (eg by wire), wirelessly, or through a third component.

As used herein, the term “module” may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as, for example, logic, logic block, component, or circuit. A module may be an integrally formed part or a minimum unit or a part of the part that performs one or more functions. For example, according to an embodiment, the module may be implemented in the form of an application-specific integrated circuit (ASIC).

Various embodiments of the present document include one or more instructions stored in a storage medium (eg, internal memory 1236 or external memory 1238) readable by a machine (eg, electronic device 1201). may be implemented as software (eg, the program 1240) including For example, a processor (eg, processor 1220 ) of a device (eg, electronic device 1201 ) may call at least one command among one or more commands stored from a storage medium and execute it. This makes it possible for the device to be operated to perform at least one function according to the at least one command called. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The device-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' only means that the storage medium is a tangible device and does not include a signal (eg, electromagnetic wave), and this term is used in cases where data is semi-permanently stored in the storage medium and It does not distinguish between temporary storage cases.

According to one embodiment, the method according to various embodiments disclosed in this document may be provided as included in a computer program product. Computer program products may be traded between sellers and buyers as commodities. The computer program product is distributed in the form of a machine-readable storage medium (eg compact disc read only memory (CD-ROM)), or via an application store (eg Play Store™) or on two user devices ( It can be distributed (eg downloaded or uploaded) directly, online between smartphones (eg: smartphones). In the case of online distribution, at least a part of the computer program product may be temporarily stored or temporarily created in a machine-readable storage medium such as a memory of a server of a manufacturer, a server of an application store, or a relay server.

According to various embodiments, each component (eg, a module or a program) of the above-described components may include a singular or a plurality of entities. According to various embodiments, one or more components or operations among the above-described corresponding components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (eg, a module or a program) may be integrated into one component. In this case, the integrated component may perform one or more functions of each component of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. . According to various embodiments, operations performed by a module, program, or other component are executed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations are executed in a different order, or omitted. or one or more other operations may be added.

Claims (15)

1. In an electronic device,

   housing;

   a display that is seen through at least a part of the housing and displays a screen using a plurality of pixels;

   a display driving circuit that provides a data voltage and a light emitting signal for driving each of the plurality of pixels to the display; and

   a processor operatively coupled to the display driving circuit and the sensor;

   The processor is

   Set 1 frame that the display drives,

   Checking whether the display displays an execution screen of an application operating below a first driving frequency that is a specified driving frequency;

   The display driving circuit,

   setting a DA frame providing the data voltage to each driving transistor of the plurality of pixels and a DH frame maintaining the data voltage value written in the address period;

   an electronic device configured to control a time for simultaneously supplying the emission signal to a plurality of lines connected to the plurality of pixels in the DH frame.
2. The method according to claim 1,

   Each of the plurality of pixels,

   a second transistor for supplying a data voltage to the driving transistor based on a first scan signal of a current frame;

   a third transistor configured to maintain the data voltage supplied to the driving transistor during the current frame based on a second scan signal of the current frame; and

   and a fourth transistor configured to initialize the data voltage based on a second scan signal of a frame preceding the current frame.
3. 3. The method according to claim 2,

   and the third transistor and the fourth transistor are oxide thin film transistors (Oxide TFTs).
4. The method according to claim 1,

   The display driving circuit is configured to simultaneously supply the light emitting signal to the plurality of pixels disposed on the display in a DH/GI section of the DH frame.
5. The method according to claim 1,

   The display driving circuit is configured to simultaneously supply the light emitting signal to the plurality of pixels disposed in the display in a GI section except for a point in time when the synchronization signal is in a high state in the DH frame.
6. The method according to claim 1,

   The display driving circuit is configured to alternately repeat the DA frame and the DH frame in a general UI or web browser environment.
7. The method according to claim 1,

   The display driving circuit is configured to control a base luminance of the display based on a width of a GI section in which the light emitting signal is simultaneously supplied to the plurality of pixels.
8. The method according to claim 1,

   The display driving circuit is configured to simultaneously supply the light emitting signal to the plurality of pixels disposed on the display in a GI section that is at least a part of the DH section within the first frame except for the DA section. ) an electronic device set to perform the actuation.
9. In an electronic device,

   housing;

   a display that is seen through at least a part of the housing and displays a screen using a plurality of pixels;

   a display driving circuit that provides a data voltage and a light emitting signal for driving each of the plurality of pixels to the display; and

   a processor operatively coupled to the display driving circuit and the sensor;

   The processor is

   Set 1 frame that the display drives,

   Checking whether the display displays an execution screen of an application operating at or below a first driving frequency that is a specified driving frequency;

   The display driving circuit,

   setting a DA frame providing the data voltage to each driving transistor of the plurality of pixels and a DH frame maintaining the data voltage value written in the address period;

   writing the data voltage to the driving transistor in the entire DA frame;

   an electronic device configured to simultaneously supply the emission signal to a plurality of lines connected to the plurality of pixels in the DH frame.
10. 10. The method of claim 9,

    Each of the plurality of pixels,

    a second transistor for supplying a data voltage to the driving transistor based on a first scan signal of a current frame;

    a third transistor configured to maintain the data voltage supplied to the driving transistor during the current frame based on a second scan signal of the current frame; and

    and a fourth transistor configured to initialize the data voltage based on a second scan signal of a frame preceding the current frame.
11. 11. The method of claim 10,

    and the third transistor and the fourth transistor are oxide thin film transistors.
12. 10. The method of claim 9,

    The display driving circuit is configured to alternately repeat the address section and the holding section in a general UI or web browser environment.
13. 10. The method of claim 9,

    The display driving circuit is configured to control the base luminance of the display based on a width of a GI section in which the light emitting signal is simultaneously supplied to the plurality of pixels.
14. 10. The method of claim 9,

    The display driving circuit is configured to write the data voltage to the plurality of pixels connected to the plurality of scan lines while sequentially changing the scanning signals supplied to each of the plurality of scan lines in the entire DA frame to a high state. electronic device.
15. In an electronic device,

    housing;

    a display that is seen through at least a part of the housing and displays a screen using a plurality of pixels;

    a display driving circuit that provides a data voltage and a light emitting signal for driving each of the plurality of pixels to the display; and

    a processor operatively coupled to the display driving circuit and the sensor;

    The processor is

    Set 1 frame that the display drives,

    Checking whether the display shows a frozen screen while the specified time has elapsed,

    The display driving circuit,

    setting a DA frame providing the data voltage to each driving transistor of the plurality of pixels and a DH frame maintaining the data voltage value written in the address period;

    After the DA frame, the DH frame is set to be repeated a plurality of times,

    An electronic device configured to simultaneously supply the emission signal to a plurality of lines connected to the plurality of pixels in a GI section that is at least a partial section of the DH frame.

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