# US 12,190,845 B2 · Processor and electronic device including the same

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- Number: US 12,190,845 B2
- Document ID: US12190845B2
- Status: Granted
- Kind: B2
- Application number: 18/081,062
- Filed: 2022-12-14
- Published: 2023-08-17
- Granted: 2025-01-07
- Earliest claimed: 2022-02-15
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Jongman Bae; Jundal Kim; Hyunsu Kim; Dong-Won Park; Junyong Song; Taeyoung Jin
- Web page: https://patentgrep.com/patent/US12190845B2

## CPC

- G09G 3/2096: {Details of the interface to the display terminal specific for a flat panel (suitable for both CRT and flat panel G09G5/006; specific for a CRT G09G1/167)}
- G09G 5/008: {Clock recovery}
- G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED]
- G09G 2310/0243: Details of the generation of driving signals
- G09G 2310/0291: Details of output amplifiers or buffers arranged for use in a driving circuit
- G09G 2330/021: Power management, e.g. power saving
- G09G 2370/08: Details of image data interface between the display device controller and the data line driver circuit
- Y02D 10/00: Energy efficient computing, e.g. low power processors, power management or thermal management
- G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00)
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

An electronic device includes a host processor including a data transmitter, a driving driver, and a display panel. The data transmitter includes a phase locked loop that generates a first clock and a second clock, a clock block that receives the first clock, a plurality of data blocks that receives the second clock, a first buffer connected between the phase locked loop and the clock block, and a plurality of second buffers respectively connected between the phase locked loop and the plurality of data blocks, and the first buffer and each of the plurality of second buffers may be activated or deactivated depending on an interface mode.

## Claims

### Claim 1

An electronic device comprising:
a host processor including a data transmitter;
a driving driver connected to the host processor in an interface mode and which receives data from the host processor; and
a display panel which is controlled by the driving driver, and
wherein the data transmitter includes:
a phase locked loop which generates a first clock and a second clock;
a clock block which receives the first clock and outputs a clock signal to a clock lane;
a plurality of data blocks which receives the second clock and respectively outputs serial data to a plurality of data lanes;
a first buffer connected between the phase locked loop and the clock block; and
a plurality of second buffers respectively connected between the phase locked loop and the plurality of data blocks,
wherein the first buffer is activated or deactivated depending on the interface mode to allow the clock block to receive or not to receive the first clock, and
wherein each of the plurality of second buffers is activated or deactivated depending on the interface mode to allow each of the plurality of data blocks to receive or not to receive the second clock.

### Claim 2 (depends on 1)

The electronic device of claim 1, wherein the data transmitter further includes:
a voltage regulator which generates a voltage provided to the clock block and the plurality of data blocks;
a third buffer connected between the voltage regulator and the clock block; and
a plurality of fourth buffers respectively connected between the voltage regulator and the plurality of data blocks, and
wherein the third buffer and each of the plurality of fourth buffers are activated or deactivated depending on the interface mode.

### Claim 3 (depends on 2)

The electronic device of claim 2, wherein, when the interface mode is a first interface mode, the first buffer, the plurality of second buffers, the third buffer, and the plurality of fourth buffers are all activated.

### Claim 4 (depends on 3)

The electronic device of claim 3, wherein, when the interface mode is a second interface mode different from the first interface mode, the first buffer and the third buffer are deactivated, at least one second buffer of the plurality of second buffers is activated and remaining second buffers of the plurality of second buffers are deactivated, and at least one fourth buffer of the plurality of fourth buffers is activated and remaining fourth buffers of the plurality of fourth buffers are deactivated.

### Claim 5 (depends on 4)

The electronic device of claim 4, wherein, in the first interface mode, both the clock lane and the plurality of data lanes are used; and
in the second interface mode, at least one data lane selected from the clock lane and the plurality of data lanes is used.

### Claim 6 (depends on 4)

The electronic device of claim 4, wherein the plurality of data blocks includes a first data block, a second data block, a third data block, and a fourth data block;
the plurality of second buffers include a first clock buffer connected between the first data block and the phase locked loop, a second clock buffer connected between the second data block and the phase locked loop, a third clock buffer connected between the third data block and the phase locked loop, and a fourth clock buffer connected between the fourth data block and the phase locked loop; and
the plurality of fourth buffers include a first voltage buffer connected between the first data block and the voltage regulator, a second voltage buffer connected between the second data block and the voltage regulator, a third voltage buffer connected between the third data block and the voltage regulator, and a fourth voltage buffer connected between the fourth data block and the voltage regulator.

### Claim 7 (depends on 6)

The electronic device of claim 6, wherein, in the second interface mode, the first clock buffer and the first voltage buffer are activated, and the second clock buffer, the third clock buffer, the fourth clock buffer, the second voltage buffer, the third voltage buffer, and the fourth voltage buffer are deactivated.

### Claim 8 (depends on 6)

The electronic device of claim 6, wherein, in the second interface mode, the first clock buffer, the second clock buffer, the first voltage buffer, and the second voltage buffer are activated, and the third clock buffer, the fourth clock buffer, the third voltage buffer, and the fourth voltage buffer are deactivated.

### Claim 9 (depends on 2)

The electronic device of claim 2, further comprising:
a signal generator which generates control signals for controlling each of operations of the first buffer, the plurality of second buffers, the third buffer, and the plurality of fourth buffers depending on the interface mode.

### Claim 10 (depends on 1)

The electronic device of claim 1, wherein a distance between an input terminal of the first buffer and an output terminal of the phase locked loop is less than a distance between an output terminal of the first buffer and an input terminal of the clock block.

### Claim 11 (depends on 1)

The electronic device of claim 1, wherein a distance between an input terminal of each of the plurality of second buffers and an output terminal of the phase locked loop is less than each of distances between output terminals of the plurality of second buffers and input terminals of the plurality of data blocks.

### Claim 12 (depends on 1)

The electronic device of claim 1, wherein the clock block and each of the plurality of data blocks include:
a clock divider which divides the first clock or the second clock by an integer multiple;
a digital processor which receives a signal from the clock divider and digitally process the signal;
a low power driver which processes data received from the digital processor and to output a signal to the clock lane or the plurality of data lanes when the data transmitter operates in a low power mode;
a serial converter which converts the data received from the digital processor into serial data when the data transmitter operates in a high-speed mode; and
a high-speed driver which processes the serial data received from the serial converter to output a signal to the clock lane or the plurality of data lanes when the data transmitter operates in the high-speed mode.

### Claim 13

A processor comprising:
a data transmitter which outputs data through an interface mode, and
wherein the data transmitter includes:
a phase locked loop which generates a first clock and a second clock;
a clock block which receives the first clock and outputs a clock signal to a clock lane;
a plurality of data blocks which receives the second clock and respectively outputs serial data to a plurality of data lanes;
a first buffer connected between the phase locked loop and the clock block; and
a plurality of second buffers respectively connected between the phase locked loop and the plurality of data blocks,
wherein the first buffer is activated or deactivated depending on the interface mode to allow the clock block to receive or not to receive the first clock, and
wherein each of the plurality of second buffers is activated or deactivated depending on the interface mode to allow each of the plurality of data blocks to receive or not to receive the second clock.

### Claim 14 (depends on 13)

The processor of claim 13, wherein the data transmitter includes:
a voltage regulator which generates a voltage provided to the clock block and the plurality of data blocks;
a third buffer connected between the voltage regulator and the clock block; and
a plurality of fourth buffers respectively connected between the voltage regulator and the plurality of data blocks, and
wherein the third buffer and each of the plurality of fourth buffers are activated or deactivated depending on the interface mode.

### Claim 15 (depends on 14)

The processor of claim 14, wherein, when the interface mode is a first interface mode, the first buffer, the plurality of second buffers, the third buffer, and the plurality of fourth buffers are all activated.

### Claim 16 (depends on 15)

The processor of claim 15, wherein, when the interface mode is a second interface mode different from the first interface mode, the first buffer and the third buffer are deactivated, at least one second buffer of the plurality of second buffers is activated and remaining second buffers of the plurality of second buffers are deactivated, and at least one fourth buffer of the plurality of fourth buffers is activated and remaining fourth buffers of the plurality of fourth buffers are deactivated.

### Claim 17 (depends on 14)

The processor of claim 14, further comprising:
a signal generator which generates control signals for controlling each of operations of the first buffer, the plurality of second buffers, the third buffer, and the plurality of fourth buffers depending on the interface mode.

### Claim 18 (depends on 13)

The processor of claim 13, wherein a distance between an input terminal of the first buffer and an output terminal of the phase locked loop is less than a distance between an output terminal of the first buffer and an input terminal of the clock block.

### Claim 19 (depends on 13)

The processor of claim 13, wherein a distance between an input terminal of each of the plurality of second buffers and an output terminal of the phase locked loop is less than each of distances between output terminals of the plurality of second buffers and input terminals of the plurality of data blocks.

### Claim 20 (depends on 13)

The processor of claim 13, wherein the clock block and each of the plurality of data blocks include:
a clock divider which divides the first clock or the second clock by an integer multiple;
a digital processor which receives a signal from the clock divider and digitally processes the signal;
a low power driver which processes data received from the digital processor and outputs a signal to the clock lane or the plurality of data lanes when the data transmitter operates in a low power mode;
a serial converter which converts the data received from the digital processor into serial data when the data transmitter operates in a high-speed mode; and
a high-speed driver which processes the serial data received from the serial converter to output a signal to the clock lane or the plurality of data lanes when the data transmitter operates in the high-speed mode.