P‐78: A Thermally Adaptive Response Time Compensation System for LCD Panels

Lee, Ki‐Chan; Park, Yun‐Jae; Ahn, Ik‐Hyun; Moon, Seong-Yong; Kim, Namdeog

doi:10.1889/1.2785339

Cited by 4 publications

(6 citation statements)

References 3 publications

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“…By equation (5), the amplitude of the transfer function is close to 1 near zero frequency and it decays as frequency increases. Moreover, the harmonic tones of the transfer function in equation (5) in high frequency also contribute noise to the delta-sigma A/D converter. It represents as a non-ideal low-pass filter because noise in the bit stream b[n] can be attenuated at only the certain frequency.…”

Section: Decimation Filtermentioning

confidence: 99%

“…Analog-to-digital converters (ADCs) are widely used in interface of the analog sensing circuits and digital processing circuits. For example, sensor is widely used in many applications, such as temperature sensor and image sensor [4][5][6]. Besides, sensing circuit can be applied to color image scanner, temperature compensation circuit, and touch panel that are indispensable in LTPS technology.…”

Section: Introductionmentioning

confidence: 99%

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P‐51: Design and Realization of Delta‐Sigma Analog‐To‐Digital Converter in LTPS Technology

Tsai

Ker²,

et al. 2009

Symp Digest of Tech Papers

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A delta‐Sigma analog‐to‐digital (A/D) converter designed and implemented with the thin‐film transistors (TFTs) on glass substrate is proposed, which has been successfully verified in a 3‐μm low‐temperature polycrystalline silicon (LTPS) process. The experimental results have shown that the probability in the bit stream of the digital output from the delta‐Sigma modulator is correctly fit in the analog input voltage ratio. Such a bit stream can be converted into 8‐bit digital code successfully under the operation voltage of 10V with thin‐film transistors (TFTs) on the glass substrate. The proposed delta‐Sigma A/D converter can be further used to achieve the precise analog circuits for System‐on‐Panel (SOP) or System‐on‐Glass (SOG) applications, which enables the analog circuits to be integrated in the active matrix LCD (AMLCD) panels.

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Section: Decimation Filtermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

P‐51: Design and Realization of Delta‐Sigma Analog‐To‐Digital Converter in LTPS Technology

Tsai

Ker²,

et al. 2009

Symp Digest of Tech Papers

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“…Moreover, ADCs have been widely used in the interface of the analog sensing circuits and digital-processing circuits, such as the touch-panel system or the thermal compensation system, to convert the analog signals into digital signals. [10][11][12] Thus, integration of ADC on glass substrate is a value-added approach to SOP applications.…”

Section: Introductionmentioning

confidence: 99%

Implementation of delta—sigma analog‐to‐digital converter in LTPS process

2010

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Abstract— An on‐panel delta—sigma analog‐to‐digital converter (ADC) has been implemented and verified for 3‐μm low‐temperature polysilicon (LTPS) technology with two basic blocks: a delta—sigma modulator and a decimation filter. From the experimental results, the digital output from the delta—sigma modulator is correctly matched with the analog input voltage ratio such that the digital output can be converted into 8‐bit digital code successfully under a supply voltage of 10 V from the decimation filter. The implemented on‐panel delta—sigma ADC can be used for the application of temperature‐to‐digital converter on glass substrate.

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“…Consequently, the AMOLED displays should use a temperature compensation system for high reliability and to maintain a good performance in wide temperature range. For temperature compensation system, a thermal sensor and its feedback system are the proper solution [7]. Following this article, a thermal sensor integrated onto a-Si:H backplane to measure the environmental temperature and feedback system for compensation of OLED brightness are presented.…”

Section: Introductionmentioning

confidence: 99%