Electronic device

Abstract

An electronic device is provided. The electronic device includes a driver, a driving circuit, and an electronic element. The driver converts first PWM data into second PWM data according to a gamma setting curve and converts first PAM data into second PAM data according to the gamma setting curve. The driving circuit includes a PWM circuit and a PAM circuit. The PWM circuit receives the second PWM data. The PAM circuit receives the second PAM data. The electronic element emits light according to a driving current provided from the driving circuit.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to an electronic device, and more particularly, to an electronic device having a pulse width modulation (PWM) circuit and a pulse amplitude modulation (PAM) circuit. BACKGROUND

[0002] Generally, an electronic device uses a source driver integrated circuit (IC) to convert digital data into an analog voltage (e.g., a gamma setting). The source driver IC provides one or more independent gamma settings for pulse amplitude modulation (PAM). To improve the optical performance of the electronic device, if the electronic device requires independent gamma settings for PAM and other pulse modulation, two source driver ICs must be required. Two source driver ICs cause a cost increase. SUMMARY

[0003] The present disclosure relates to an electronic device having a gamma setting for pulse amplitude modulation (PAM) and pulse width modulation (PWM).

[0004] An electronic device is provided. The electronic device includes a driver, a driving circuit, and an electronic element. The driver converts first PWM data into second PWM data according to a gamma setting curve and converts first PAM data into second PAM data according to the gamma setting curve. The driving circuit is electrically connected to the driver. The driving circuit includes a PWM circuit and a PAM circuit. The PWM circuit receives the second PWM data. The PAM circuit receives the second PAM data. The electronic element is electrically connected to the driving circuit. The electronic element emits light according to a driving current provided from the driving circuit.

[0005] In order to facilitate a fuller understanding of the foregoing, a number of embodiments are explained hereinafter with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0006] The accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0007] Figure 1 FIG. 1 shows a schematic diagram of an electronic device according to a first embodiment of the present disclosure;

[0008] Figure 2 FIG. 2 shows a schematic diagram of an electronic device according to a second embodiment of the present disclosure;

[0009] Figure 3 a schematic diagram showing operations according to Figure 2 an embodiment of the present disclosure;

[0010] Figure 4 a gamma setting curve according to an embodiment of the present disclosure;

[0011] Figure 5 a gamma setting curve according to an embodiment of the present disclosure;

[0012] Figure 6 a gamma setting curve according to an embodiment of the present disclosure;

[0013] Figure 7 a schematic diagram showing an electronic device according to a third embodiment of the present disclosure;

[0014] Figure 8 a schematic diagram showing an electronic device according to a fourth embodiment of the present disclosure.

[0015] Explanation of Reference Numerals

[0016] 100, 200, 300, 400: electronic device

[0017] 110, 210, 310, 410: driver

[0018] 120, PC11, PC12, PC13, PC21, PC22, PC23: drive circuit

[0019] 121, CW11, CW12, CW13, CW21, CW22, CW23: PWM circuit

[0020] 122, CA11, CA12, CA13, CA21, CA22, CA23: PAM circuit

[0021] 211, 311: data converter

[0022] 212, 312: source driver circuit

[0023] BUS1 to BUS3: data bus

[0024] CV1 to CV5: conversion curve

[0025] DG: gray scale data

[0026] Dpwm: first PWM data

[0027] Dpam: first PAM data

[0028] GSC, GSC01 to GSC16: gamma setting curve

[0029] Id: drive current

[0030] Lout: light

[0031] LU, LU11, LU12, LU13, LU21, LU22, LU23: electronic element

[0032] P1: first portion of gamma setting curve

[0033] P2: second portion of gamma setting curve

[0034] PA: display area

[0035] SP11, SP12, SP13, SP21, SP22, SP23: pixel unit

[0036] Vpam, Vpam1, Vpam2, Vpam3: second PAM data

[0037] Vpwm, Vpwm1, Vpwm2: second PWM data DETAILED DESCRIPTION

[0038] The present disclosure can be understood by referring to the following detailed description in conjunction with the drawings, which are as follows. It should be noted that the various drawings of the present disclosure show portions of electronic devices for purposes of clarity and ease of understanding for the reader, and certain elements in the various drawings can not be drawn to scale. In addition, the number and size of each device shown in the drawings is merely illustrative, and is not intended to limit the scope of the present disclosure.

[0039] Certain terminology is used throughout the description and the appended claims to refer to particular components. As one skilled in the art will appreciate, electronic device manufacturers can refer to a component by different names. This document does not intend to distinguish between components that differ in name but not in function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "including, but not limited to...." Also, the term "couple" or "coupled" as used herein is intended to mean either an indirect or direct electrical connection. Accordingly, when the term "couple" or "coupled" is used in the following description, that which is being referred to is coupled to or in communication with something else, but can not be directly connected to it.

[0040] It will be understood that when an element is referred to as being "coupled to", "connected to", or "conducted to" another element, it can be directly connected to the other element or electrically connected to the other element with intervening elements between the element and the other element for relaying the electrical connection (indirect electrical connection). In contrast, when an element is referred to as being "directly coupled to", "directly connected to", or "directly conducted to" another element, there are no intervening elements.

[0041] Although the terms such as first, second, third, etc. can be used to describe different constituent elements, such constituent elements are not limited by the terms. The terms are used only to distinguish the constituent elements from other constituent elements in the specification. The claims can not use the same terms, but can use the terms first, second, third, etc. for the order of the claimed elements. Therefore, in the following description, a first constituent element can be a second constituent element in the claims.

[0042] In the present disclosure, an embodiment uses "pixel" or "pixel unit" as a unit for describing a specific region including at least one functional circuit for at least one specific function. "Pixel with a circuit" can be described as "circuit" in the present disclosure. For example, "pixel with a current source" can be described as "current source", or "pixel with a current sink" can be described as "current sink". The region of "pixel" depends on the unit providing a specific function, and adjacent pixels can share the same component or wiring, but can also include their own specific components therein. For example, adjacent pixels can share the same scan line or the same data line, but the pixels can also have their own transistors or capacitors.

[0043] In the present disclosure, a current source circuit is a circuit unit for outputting a current, and a current sink is a circuit unit for sinking a current. Adjacent circuit units can share the same component or wiring, and can also include their specific components therein.

[0044] It should be noted that the technical features in the different embodiments described below can be replaced, recombined, or mixed with each other to constitute another embodiment without departing from the spirit of the present disclosure.

[0045] Figure 1 A schematic diagram of an electronic device according to a first embodiment of the present disclosure is shown. Referring to FIG. 1, an electronic device 100 includes a display panel 110, a scan driver 120, a data driver 130, and a timing controller 140. Figure 1, the electronic device 100 includes a driver 110, a drive circuit 120, and an electronic element LU. In the embodiment, the driver 110 converts the first PWM data Dpwm to the second PWM data Vpwm according to a gamma setting curve GSC. The driver 110 converts the first PAM data Dpam to the second PAM data Vpam according to the gamma setting curve GSC. In the embodiment, the driver 110 receives gray scale data DG. The driver 110 generates the first PWM data Dpwm and the first PAM data Dpam according to the gray scale data DG. In the embodiment, the gray scale data DG has digital gray values.

[0046] In the embodiment, the drive circuit 120 is electrically connected to the driver 110. The drive circuit 120 includes a PWM circuit 121 and a PAM circuit 122. The PWM circuit 121 receives the second PWM data Vpwm from the driver 110. The PAM circuit 122 receives the second PAM data Vpam from the driver 110. In the embodiment, the drive circuit 120 provides a drive current Id in response to the second PWM data Vpwm and the second PAM data Vpam. The electronic element LU is electrically connected to the drive circuit 120. The electronic element LU can be a light emitting element, and the electronic element LU can emit light Lout according to the drive current Id provided from the drive circuit 120.

[0047] According to some embodiments, the driver 110 converts the first PWM data Dpwm to the second PWM data Vpwm and converts the first PAM data Dpam to the second PAM data Vpam according to the gamma setting curve GSC. The electronic device 100 has a hybrid gamma setting for PAM and PWM based on one driver 110. Therefore, the optical performance of the electronic device 100 can be improved by the hybrid gamma setting for PAM and PWM without significantly increasing the cost.

[0048] Referring to the embodiment, Figure 1 The drive circuit 120 is electrically connected to the driver 110 via two separate data buses BUS1 and BUS2. The data bus BUS1 is connected to the driver 110 and the PWM circuit 121. The second PWM data Vpwm is transmitted from the driver 110 to the PWM circuit 121 via the data bus BUS1. The data bus BUS2 is connected to the driver 110 and the PAM circuit 122. The second PAM data Vpam is transmitted from the driver 110 to the PAM circuit 122 via the data bus BUS2.

[0049] In the embodiment, the electronic device 100 is a light emitting device, but is not limited thereto. For example, the electronic device 100 can be a non-light emitting device or a display device. The driving circuit can be a pixel circuit for a display device, but is not limited thereto. The driver 110 can be implemented by a conversion circuit, a source driver circuit, a data driver circuit, or a combination thereof. The electronic element LU can be a light emitting element. For example, the electronic element LU can be at least one of an organic light emitting diode display device (OLED), an inorganic light emitting diode (LED), a minimeter-sized light emitting diode (mini-LED), a micrometer-sized light emitting diode (micro-LED), a quantum dot light emitting diode (QLED), but is not limited thereto.

[0050] Figure 2 A schematic diagram of an electronic device according to a second embodiment of the present disclosure is shown. Referring to FIG. 2, Figure 2 The electronic device 200 includes a driver 210, a driving circuit 120, and an electronic element LU. In the embodiment, the driver 210 includes a data converter 211 and a source driver circuit 212. The data converter 211 is configured to receive the gray data DG and convert the gray data DG into first PWM data Dpwm and first PAM data Dpam. The source driver circuit 212 is electrically connected to the data converter 211. The source driver circuit 212 is configured to receive the first PWM data Dpwm and the first PAM data Dpam from the data converter 211. The source driver circuit 212 is configured to convert the first PWM data Dpwm into second PWM data Vpwm according to a gamma setting curve GSC and convert the first PAM data Dpam into second PAM data Vpam according to the gamma setting curve GSC. In some embodiments, the electronic element LU can be a light emitting element and the electronic device 200 can be a light emitting device.

[0051] The operation of the driving circuit 120 and the electronic element LU has been clearly explained in the embodiment shown. Therefore, the operation of the driving circuit 120 and the electronic element LU will not be repeated here. Figure 1 The operation of the driving circuit 120 and the electronic element LU has been clearly explained in the embodiment shown. Therefore, the operation of the driving circuit 120 and the electronic element LU will not be repeated here.

[0052] In the embodiment, the data converter 211 includes at least one of a field programmable gate array (FPGA) circuit or a look-up table (LUT), but is not limited thereto. For example, the data converter 211 can convert the gray scale data DG into the first PWM data Dpwm and the first PAM data Dpam through the LUT. In the embodiment, the source driver circuit 212 includes a digital to analog converter (DAC), but is not limited thereto. For example, the source driver circuit 212 can convert the first PWM data Dpwm into the second PWM data Vpwm through the DAC and convert the first PAM data Dpam into the second PAM data Vpam through the DAC.

[0053] Figure 3 a schematic diagram illustrating an operation according to Figure 2 Referring to Figure 2 and Figure 3 , Figure 3 conversion curves CV1, CV2, CV3, CV4, and CV5 are illustrated. The conversion curve CV1 illustrates a conversion relationship between the gray scale data DG and the first PWM data Dpwm. The conversion curve CV2 illustrates a conversion relationship between the gray scale data DG and the first PAM data Dpam.

[0054] Based on the conversion curve CV1, when the gray scale data DG is lower than a specified gray level, a digital value of the first PWM data Dpwm increases as the gray scale data DG increases. When the gray scale data DG is higher than or equal to the specified gray level, the digital value of the first PWM data Dpwm is fixed to a maximum digital value. For example, the specified gray level is set to "128". When the gray scale data DG is lower than the specified gray level (128), the digital value of the first PWM data Dpwm increases as the gray scale data DG increases. When the gray scale data DG is higher than or equal to 128, the digital value of the first PWM data Dpwm is fixed to "128".

[0055] Based on the conversion curve CV2, when the gray scale data DG is lower than a specified gray level, a digital value of the first PAM data Dpam is fixed to a minimum digital value. For example, the specified gray level is set to "128". When the gray scale data DG is lower than the specified gray level, the digital value of the first PAM data Dpam is fixed to "128". When the gray scale data DG is higher than or equal to the specified gray level, the digital value of the first PWM data Dpwm increases as the gray scale data DG increases.

[0056] The data converter 211 receives the gradation data DG, converts the gradation data DG into the first PWM data Dpwm according to the conversion curve CV1, and converts the gradation data DG into the first PAM data Dpam according to the conversion curve CV2.

[0057] In some embodiments, the conversion curve CV1 is used as a first lookup table (LUT). The conversion curve CV2 is used as a second LUT. Thus, the data converter 211 can convert the gradation data DG into the first PWM data Dpwm according to the first lookup table (LUT) and convert the gradation data DG into the first PAM data Dpam according to the second LUT.

[0058] Referring to Figure 3 In the embodiments, the conversion curve CV3 is a gamma setting curve GSC. The gamma setting curve GSC shows a conversion relationship between the first PWM data Dpwm, the second PWM data Vpwm, the first PAM data Dpam, and the second PAM data Vpam. The gamma setting curve GSC includes a first portion P1 and a second portion P2. The first portion P1 and the second portion P2 of the gamma setting curve GSC do not overlap. In the embodiments, the first portion P1 is a gamma setting curve between the first PWM data Dpwm and the second PWM data Vpwm. The second portion P2 is a gamma setting curve between the first PAM data Dpam and the second PAM data Vpam.

[0059] In the embodiments, the first portion P1 shows a conversion relationship between the first PWM data Dpwm and the second PWM data Vpwm. The source driver circuit 212 converts the first PWM data Dpwm into the second PWM data Vpwm according to the first portion P1. In the embodiments, the first PWM data Dpwm is PWM digital data. The second PWM data Vpwm is PWM analog data. Further, the PWM analog data is a first control voltage output to the PWM circuit 121 for controlling a width of the drive current Id.

[0060] The second portion P2 shows a conversion relationship between the first PAM data Dpam and the second PAM data Vpam. The source driver circuit 212 converts the first PAM data Dpam into the second PAM data Vpam according to the second portion P2. In the embodiments, the first PAM data Dpam is PAM digital data. The second PAM data Vpam is PAM analog data. Further, the PAM analog data is a second control voltage output to the PAM circuit for controlling an amplitude of the drive current Id.

[0061] Referring to Figure 3For example, when the gray scale data DG is "0", the digital value of the first PWM data Dpwm is "0", and the digital value of the first PAM data Dpam is fixed to "128". The source driver circuit 212 can provide the second PWM data Vpwm1 and the second PAM data Vpam1. When the gray scale data DG is "128", the digital value of the first PWM data Dpwm is "128", and the digital value of the first PAM data Dpam is fixed to "128". The source driver circuit 212 can provide the second PWM data Vpwm2 and the second PAM data Vpam1. When the gray scale data DG is "200", the digital value of the first PWM data Dpwm is fixed to "128", and the digital value of the first PAM data Dpam is "200". The source driver circuit 212 can provide the second PWM data Vpwm2 and the second PAM data Vpam3. When the gray scale data DG is "255", the source driver circuit 212 can provide the second PWM data Vpwm2 and the second PAM data Vpam2 when the digital value of the first PWM data Dpwm is fixed to "128" and the digital value of the first PAM data Dpam is "255".

[0062] In the embodiment, the conversion curve CV4 shows a conversion relationship between the second PWM data Vpwm and the emission time. The emission time is associated with the width and / or duty cycle of the driving current Id. The PWM circuit 121 controls the width of the driving current Id according to the second PWM data Vpwm (i.e., PWM analog data) based on the conversion curve CV4. In the embodiment, the conversion curve CV5 shows a conversion relationship between the second PAM data Vpam and the amplitude of the driving current Id. The amplitude of the driving current Id is the current value of the driving current Id. The PAM circuit 122 controls the amplitude of the driving current Id according to the second PAM data Vpam (i.e., PAM analog data) based on the conversion curve CV5.

[0063] For example, the PWM circuit 121 provides the emission time T1 according to the second PWM data Vpwm1 and provides the emission time T2 according to the second PWM data Vpwm2. The PAM circuit 122 provides the current value I1 of the driving current Id according to the second PAM data Vpam1, provides the current value I2 of the driving current Id according to the second PAM data Vpam2, and provides the current value I3 of the driving current Id according to the second PAM data Vpam3.

[0064] In the embodiment, the PWM circuit 121 is electrically connected to the PAM circuit 122. The PAM circuit 122 is electrically connected to the electronic element LU. For example, the PAM circuit 122 includes a drive transistor (not shown). A first terminal of the drive transistor is used to receive a drive current Id. A second terminal of the drive transistor is electrically connected to the electronic element LU. A control terminal of the drive transistor is electrically connected to the PWM circuit 121. The control terminal of the drive transistor is used to receive a first control voltage associated with the emission time.

[0065] Based on the conversion curves CV1, CV2, CV3, CV4 and CV5, when the gray scale data DG is lower than the specified gray scale, the operation of the electronic element LU is adjusted by the emission time. In addition, when the gray scale data DG is lower than the specified gray scale, the drive current Id provided from the drive circuit 120 is fixed. When the gray scale data DG is higher than or equal to the specified gray scale, the operation of the electronic element LU is adjusted by the drive current Id. In addition, when the gray scale data DG is higher than or equal to the specified gray scale, the emission time is fixed.

[0066] In some embodiments, the gamma setting curve GSC can be designed in different forms.

[0067] Figure 4 Gamma setting curves according to embodiments of the disclosure are shown. Referring to FIG. 1, a gamma setting curve GSC is shown. The gamma setting curve GSC includes a first portion P1 and a second portion P2. The first portion P1 is between a first PWM data Dpwm and a second PWM data Vpwm, and the second portion P2 is between a first PAM data Dpam and a second PAM data Vpam. In this embodiment, the first portion P1 and the second portion P2 of the gamma setting curve GSC do not overlap. Figure 4 , Figure 4 Gamma setting curves GSC01, GSC02, GSC03 and GSC04 are shown. Each of the gamma setting curves GSC01, GSC02, GSC03 and GSC04 includes a first portion P1 and a second portion P2. The first portion P1 is between a first PWM data Dpwm and a second PWM data Vpwm, and the second portion P2 is between a first PAM data Dpam and a second PAM data Vpam. In this embodiment, the first portion P1 and the second portion P2 of the gamma setting curve GSC do not overlap.

[0068] In the gamma setting curve GSC01, a minimum value of the second PAM data Vpam is equal to or higher than a maximum value of the second PWM data Vpwm. In addition, the second PWM data Vpwm is positively correlated with the first PWM data Dpwm, and the second PAM data Vpam is positively correlated with the first PAM data Dpam.

[0069] In the gamma setting curve GSC02, a minimum value of the second PWM data Vpwm is equal to or higher than a maximum value of the second PAM data Vpam. In addition, the second PWM data Vpwm is positively correlated with the first PWM data Dpwm, and the second PAM data Vpam is positively correlated with the first PAM data Dpam.

[0070] In the gamma setting curve GSC03, the minimum value of the second PAM data Vpam is equal to or higher than the maximum value of the second PWM data Vpwm. In addition, the second PWM data Vpwm is negatively correlated with the first PWM data Dpwm, and the second PAM data Vpam is negatively correlated with the first PAM data Dpam.

[0071] In the gamma setting curve GSC04, the minimum value of the second PWM data Vpwm is equal to or higher than the maximum value of the second PAM data Vpam. In addition, the second PWM data Vpwm is negatively correlated with the first PWM data Dpwm, and the second PAM data Vpam is negatively correlated with the first PAM data Dpam.

[0072] Figure 5 Gamma setting curves according to embodiments of the disclosure are shown. Referring to FIG. 1, a gamma setting curve GSC01 is shown. The gamma setting curve GSC01 includes a first portion P1 and a second portion P2. The first portion P1 is between a first PWM data Dpwm and a second PWM data Vpwm, and the second portion P2 is between a first PAM data Dpam and a second PAM data Vpam. The first portion P1 and the second portion P2 of the gamma setting curve GSC01 partially overlap. Figure 5 , Figure 5 Gamma setting curves GSC05 to GSC08 are shown. Each of the gamma setting curves GSC05, GSC06, GSC07, and GSC08 includes a first portion P1 and a second portion P2. The first portion P1 is between a first PWM data Dpwm and a second PWM data Vpwm, and the second portion P2 is between a first PAM data Dpam and a second PAM data Vpam. The first portion P1 and the second portion P2 of the gamma setting curve GSC partially overlap.

[0073] In the gamma setting curve GSC05, the minimum value of the second PAM data Vpam is lower than the maximum value of the second PWM data Vpwm. In addition, the maximum value of the second PAM data Vpam is higher than the maximum value of the second PWM data Vpwm. The minimum value of the second PAM data Vpam is higher than the minimum value of the second PWM data Vpwm. In addition, the second PWM data Vpwm is positively correlated with the first PWM data Dpwm, and the second PAM data Vpam is positively correlated with the first PAM data Dpam.

[0074] In the overlapping portion of the first portion P1 and the second portion P2, the driver 110 can provide the second PWM data Vpwm and the second PAM data Vpam based on both the first PWM data Dpwm and the first PAM data Dpam. Therefore, in the overlapping portion, the second PWM data Vpwm and the second PAM data Vpam have high resolution.

[0075] In the gamma set curve GSC06, the minimum value of the second PWM data Vpwm is lower than the maximum value of the second PAM data Vpam. Further, the maximum value of the second PWM data Vpwm is higher than the maximum value of the second PAM data Vpam. The minimum value of the second PWM data Vpwm is higher than the minimum value of the second PAM data Vpam. Further, the second PWM data Vpwm is positively correlated with the first PWM data Dpwm, and the second PAM data Vpam is positively correlated with the first PAM data Dpam.

[0076] In the gamma set curve GSC07, the minimum value of the second PAM data Vpam is lower than the maximum value of the second PWM data Vpwm. Further, the maximum value of the second PAM data Vpam is higher than the maximum value of the second PWM data Vpwm. The minimum value of the second PAM data Vpam is higher than the minimum value of the second PWM data Vpwm. Further, the second PWM data Vpwm is negatively correlated with the first PWM data Dpwm, and the second PAM data Vpam is negatively correlated with the first PAM data Dpam.

[0077] In the gamma set curve GSC08, the minimum value of the second PWM data Vpwm is lower than the maximum value of the second PAM data Vpam. Further, the maximum value of the second PWM data Vpwm is higher than the maximum value of the second PAM data Vpam. The minimum value of the second PWM data Vpwm is higher than the minimum value of the second PAM data Vpam. Further, the second PWM data Vpwm is negatively correlated with the first PWM data Dpwm, and the second PAM data Vpam is negatively correlated with the first PAM data Dpam.

[0078] Figure 6 Gamma set curves according to embodiments of the disclosure are shown. Referring to FIG. 1, a gamma set curve GSC01 is shown. The gamma set curve GSC01 includes a first portion P1 and a second portion P2. The first portion P1 and the second portion P2 of the gamma set curve GSC01 are partially overlapped. Figure 6 , Figure 6 Gamma set curves GSC09 to GSC16 are shown. Each of the gamma set curves GSC09 to GSC16 includes a first portion P1 and a second portion P2. The first portion P1 and the second portion P2 of the gamma set curve GSC are partially overlapped.

[0079] In the gamma set curve GSC09, the first portion P1 is in the second portion P2. Further, the minimum value of the second PWM data Vpwm is equal to the minimum value of the second PAM data Vpam. The maximum value of the second PWM data Vpwm is lower than the maximum value of the second PAM data Vpam. Further, the second PWM data Vpwm is positively correlated with the first PWM data Dpwm, and the second PAM data Vpam is positively correlated with the first PAM data Dpam.

[0080] In the gamma set curve GSC 10, the first portion P1 is in the second portion P2. Further, the maximum value of the second PWM data Vpwm is equal to the maximum value of the second PAM data Vpam. The minimum value of the second PWM data Vpwm is higher than the minimum value of the second PAM data Vpam. Further, the second PWM data Vpwm is positively correlated with the first PWM data Dpwm, and the second PAM data Vpam is positively correlated with the first PAM data Dpam.

[0081] In the gamma set curve GSC 11, the first portion P1 is in the second portion P2. Further, the minimum value of the second PWM data Vpwm is equal to the minimum value of the second PAM data Vpam. The maximum value of the second PWM data Vpwm is lower than the maximum value of the second PAM data Vpam. Further, the second PWM data Vpwm is negatively correlated with the first PWM data Dpwm, and the second PAM data Vpam is negatively correlated with the first PAM data Dpam.

[0082] In the gamma set curve GSC 12, the first portion P1 is in the second portion P2. Further, the maximum value of the second PWM data Vpwm is equal to the maximum value of the second PAM data Vpam. The minimum value of the second PWM data Vpwm is higher than the minimum value of the second PAM data Vpam. Further, the second PWM data Vpwm is negatively correlated with the first PWM data Dpwm, and the second PAM data Vpam is negatively correlated with the first PAM data Dpam.

[0083] In the gamma set curve GSC 13, the second portion P2 is in the first portion P1. Further, the minimum value of the second PAM data Vpam is equal to the minimum value of the second PWM data Vpwm. The maximum value of the second PAM data Vpam is lower than the maximum value of the second PWM data Vpwm. Further, the second PWM data Vpwm is positively correlated with the first PWM data Dpwm, and the second PAM data Vpam is positively correlated with the first PAM data Dpam.

[0084] In the gamma set curve GSC 14, the second portion P2 is in the first portion P1. Further, the maximum value of the second PAM data Vpam is equal to the maximum value of the second PWM data Vpwm. The minimum value of the second PAM data Vpam is higher than the minimum value of the second PWM data Vpwm. Further, the second PWM data Vpwm is positively correlated with the first PWM data Dpwm, and the second PAM data Vpam is positively correlated with the first PAM data Dpam.

[0085] In the gamma setting curve GSC15, the second portion P2 is in the first portion P1. In addition, the minimum value of the second PAM data Vpam is equal to the minimum value of the second PWM data Vpwm. The maximum value of the second PAM data Vpam is lower than the maximum value of the second PWM data Vpwm. In addition, the second PWM data Vpwm is negatively correlated with the first PWM data Dpwm, and the second PAM data Vpam is negatively correlated with the first PAM data Dpam.

[0086] In the gamma setting curve GSC16, the second portion P2 is in the first portion P1. In addition, the maximum value of the second PAM data Vpam is equal to the maximum value of the second PWM data Vpwm. The minimum value of the second PAM data Vpam is higher than the minimum value of the second PWM data Vpwm. In addition, the second PWM data Vpwm is negatively correlated with the first PWM data Dpwm, and the second PAM data Vpam is negatively correlated with the first PAM data Dpam.

[0087] Figure 7 A schematic diagram of an electronic device according to a third embodiment of the present disclosure is shown. Referring to Figure 7 , the electronic device 300 includes a driver 310, a drive circuit 120, and an electronic element LU. The driver 310 includes a data converter 311 and a source driver circuit 312. The data converter 311 receives the grayscale data DG and converts the grayscale data DG into the first PWM data Dpwm and the first PAM data Dpam. The source driver circuit 312 is electrically connected to the data converter 311. The source driver circuit 312 receives the first PWM data Dpwm and the first PAM data Dpam from the data converter 311. The source driver circuit 312 converts the first PWM data Dpwm into the second PWM data Vpwm according to the gamma setting curve GSC, and converts the first PAM data Dpam into the second PAM data Vpam according to the gamma setting curve GSC. The drive circuit 120 includes a PWM circuit 121 and a PAM circuit 122.

[0088] In the embodiment, referring to Figure 7The source driver circuit 312 sequentially provides the second PWM data Vpwm and the second PAM data Vpam to the drive circuit 120. In this embodiment, the drive circuit 120 is electrically connected to the driver 310 via a single data bus BUS3. The data bus BUS3 connects the driver 310, the PWM circuit 121, and the PAM circuit 122. The second PWM data Vpwm and the second PAM data Vpam are transmitted from the driver to the drive circuit 120 via the data bus BUS3. For example, the source driver circuit 312 provides the second PWM data Vpwm to the PWM circuit 121 via the data bus BUS3 at a first time and provides the second PAM data Vpam to the PAM circuit 122 via the data bus BUS3 at a second time.

[0089] Figure 8 A schematic diagram of an electronic device according to a fourth embodiment of this disclosure is shown. (Refer to...) Figure 8 The electronic device 400 includes a driver 410 and multiple drive circuits PC11 to PC23, as well as electronic components LU11 to LU23. Figure 8 For simplicity, only six drive circuits are shown in this embodiment, and the number of drive circuits can be determined as needed. The plurality of drive circuits are electrically connected to driver 410. In this embodiment, drive circuit PC11 includes a PWM circuit CW11 and a PAM circuit CA11. Drive circuit PC12 includes a PWM circuit CW12 and a PAM circuit CA12. Drive circuit PC13 includes a PWM circuit CW13 and a PAM circuit CA13. Drive circuit PC21 includes a PWM circuit CW21 and a PAM circuit CA21. Drive circuit PC22 includes a PWM circuit CW22 and a PAM circuit CA22. Drive circuit PC23 includes a PWM circuit CW23 and a PAM circuit CA23.

[0090] In the embodiment, the drive circuit PC11 is connected between the electronic element LU11 and the driver 410. The drive circuit PC11 and the electronic element LU11 are configured as a sub-pixel unit SP11 in the display area PA. The drive circuit PC12 is connected between the electronic element LU12 and the driver 410. The drive circuit PC12 and the electronic element LU12 are configured as a sub-pixel unit SP12 in the display area PA. Other sub-pixel units SP13, SP21, SP22, and SP23 have similar designs. The sub-pixel units SP11, SP12, SP13, SP21, SP22, and SP23 are arranged in a plurality of columns and a plurality of rows in the display area PA. According to some embodiments, the electronic device 400 can include a substrate (not shown), and a plurality of sub-pixel units (e.g., SP11, SP12, SP13, SP21, SP22, and SP23) can be disposed on the substrate. One sub-pixel unit can include a drive circuit and an electronic element LU11. Taking the sub-pixel unit SP11 as an example, the sub-pixel unit SP11 includes the drive circuit PC11 and the electronic element LU11. The drive circuit PC11 is disposed in the sub-pixel unit SP11 and is a pixel circuit (or a sub-pixel circuit).

[0091] In the embodiment, the driver 410 can be implemented by the driver 110 in FIG. 1 or the driver 210 in FIG. 2. Each of the drive circuits PC11 to PC23 can be implemented by the drive circuit 120 in FIG. 1. Figure 1 Figure 2 In the embodiment, the driver 410 can be implemented by the driver 110 in FIG. 1 or the driver 210 in FIG. 2. Each of the drive circuits PC11 to PC23 can be implemented by the drive circuit 120 in FIG. 1. Figure 1

[0092] The driver 410 drives the sub-pixel units SP11, SP12, SP13, SP21, SP22, and SP23 according to the gray scale data DG. For example, the driver 410 converts the gray scale data DG into first PWM data Dpwm and first PAM data Dpam. The driver 410 converts the first PWM data Dpwm into second PWM data Vpwm and converts the first PAM data Dpam into second PAM data Vpam according to a gamma setting curve. The PWM circuit CW12 receives the second PWM data Vpwm from the driver 410. The PAM circuit CA12 receives the second PAM data Vpam from the driver 410. Thus, the drive circuit PC12 provides a drive current in response to the second PWM data Vpwm and the second PAM data Vpam. The electronic element LU12 emits light according to the drive current provided from the drive circuit PC12.

[0093] For ease of illustration, the embodiment takes six sub-pixel units SP11 to SP23 as an example. The number of sub-pixel units of the present disclosure can be one or more and is not limited to the embodiment.

[0094] ​​To sum up, in the embodiments of the present disclosure, an electronic device includes a driver, a driving circuit, and an electronic element. The driver converts first PWM data into second PWM data and converts first PAM data into second PAM data according to a gamma setting curve. The electronic device has a hybrid gamma setting for PAM and PWM through one driver. Therefore, the electronic device improves optical performance through the hybrid gamma setting for PAM and PWM without significantly increasing cost.

[0095] It will be apparent to those skilled in the art that various modifications and variations can be made to the disclosed embodiments without departing from the scope or spirit of the disclosure. In light of the above, it is intended that the present disclosure cover the modifications and variations of the embodiments falling within the scope of the following claims and their equivalents.

Claims

1. An electronic device, characterized by comprising: The electronic device comprises: a driver configured to convert first pulse width modulation data into second pulse width modulation data according to a gamma setting curve and to convert first pulse amplitude modulation data into second pulse amplitude modulation data according to the gamma setting curve; a driving circuit electrically connected to the driver and comprising a pulse width modulation circuit and a pulse amplitude modulation circuit, wherein the pulse width modulation circuit is configured to receive the second pulse width modulation data and the pulse amplitude modulation circuit is configured to receive the second pulse amplitude modulation data; and an electronic element electrically connected to the driving circuit and configured to be driven according to a driving current provided from the driving circuit, wherein the gamma setting curve comprises a first portion and a second portion, wherein the first portion is a portion of the gamma setting curve between the first pulse width modulation data and the second pulse width modulation data, and the second portion is a portion of the gamma setting curve between the first pulse amplitude modulation data and the second pulse amplitude modulation data. 2.The electronic device of claim 1, wherein, The first pulse width modulation data is pulse width modulation digital data and the second pulse width modulation data is pulse width modulation analog data. 3.The electronic device of claim 2, wherein, The pulse width modulation analog data is a first control voltage output to the pulse width modulation circuit for controlling a width of the driving current. 4.The electronic device of claim 2, wherein, The width of the driving current is controlled by the pulse width modulation circuit according to the pulse width modulation analog data. 5.The electronic device of claim 1, wherein, The first pulse amplitude modulation data is pulse amplitude modulation digital data and the second pulse amplitude modulation data is pulse amplitude modulation analog data. 6.The electronic device of claim 5, wherein, The pulse amplitude modulation analog data is a second control voltage output to the pulse amplitude modulation circuit for controlling an amplitude of the driving current. 7.The electronic device of claim 5, wherein, The amplitude of the driving current is controlled by the pulse amplitude modulation circuit according to the pulse amplitude modulation analog data. 8.The electronic device of claim 1, wherein, The first portion and the second portion partially overlap. 9.The electronic device of claim 1, wherein, The first portion and the second portion of the gamma setting curve do not overlap. 10.The electronic device of claim 1, wherein, The driver comprises: a data converter configured to receive grayscale data and to convert the grayscale data into the first pulse width modulation data and the first pulse amplitude modulation data; and a source driver circuit electrically connected to the data converter and configured to receive the first pulse width modulation data and the first pulse amplitude modulation data from the data converter and to convert the first pulse width modulation data into the second pulse width modulation data according to the gamma setting curve and to convert the first pulse amplitude modulation data into the second pulse amplitude modulation data according to the gamma setting curve.

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